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• Cannot Login as root

  - by Josh Moore

  At my work we ship our product on pre-installed servers as a software/hardware package. We are using open SUSE 10.3 for the OS and we setup and we always log in with the root user to do maintenance on the box. Recently we just had box returned to us that the customer said the could not longer connect to the box through the network interface. So when I started to work on the box I run into the this problem: At the command prompt to login i type the user name "root" and hit enter. Then even before it asks me for a password I get "Login incorrect". I have never seen this behavior before and could not find any information about it online. Does anybody know what is going on? Thanks.

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• Sql database dumps failing every night

  - by chaseman36

  Hey guys, I have sql05 and my maintenance plan which backs up a database to an external storage SAN, has been failing every night. Here is my error: Executing the query "BACKUP DATABASE [master] TO DISK = N'\\192.168.x.x\vmbackup\server\dbbackup\master_backup_201004222300.bak' WITH NOFORMAT, NOINIT, NAME = N'master_backup_20100422230002', SKIP, REWIND, NOUNLOAD, STATS = 10 " failed with the following error: "Cannot open backup device '\\192.168.x.x\vmbackup\server\dbbackup\master_backup_201004222300.bak'. Operating system error 5(Access is denied.). BACKUP DATABASE is terminating abnormally.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly. I googled this error and tried adding permissions to the backup device for network service as recommended at experts exchange, no dice. Does anyone have any ideas?

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• Override template shell on linux system in Active Directory domain?

  - by benizi

  Is there an easy way to override the Samba "template shell = /bin/bash" setting on a per-user basis? This is for Linux systems joined to an Active Directory domain. Some users want /bin/bash. Others including myself want /bin/zsh. Is there some AD attribute I can set? Anything I've found via googling seems hackish at best (writing a script to replace /bin/sh -- maintenance hassle). A similar serverfault question Override LDAP shell seems OpenLDAP-oriented (but if someone knows how to get it working with AD, please say so).

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• IIS 6 is no longer installed after computer restart.

  - by jarrettcoggin

  I was doing some maintenance on a build server at work and I changed some various settings (registry settings for custom applications, user permissions, etc.), then I restarted the machine. When the machine came back up, I couldn't access a website that is hosted on this machine, so I went digging around. It seems as if IIS6 was somehow uninstalled, which I know I didn't do. My question is: What would cause this? I've tried to reinstall it, uninstall it, reinstall it again, and nothing has changed. I still have a blank IIS Manager application (inetmgr), and no way to access these websites. BTW, the computer is running Windows Server 2003 R2 x64 Service Pack 2.

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• How to keep programs from source up to date?

  - by wizard

  I'm designing a new server setup for hosting multiple websites. (Shared hosting for my clients over at SliceHost.) I've recently moved away from the traditional LAMP setup and chosen Ubuntu, Nginx, php-fpm and mysql. I like it a lot better then my old Apache, suphp, mysql setup. It works great, provided encapsulation between sites and uses substantiallly less memory. However I have one major maintenance problem. In order to have a recent version of Nginx and in order to use php-fpm I've had to compile these programs from source. The reason I see this as a problem is that keeping track of updates, and build configurations will end up being a lot of work. For two programs (and a patch) I can handle it, but it seems like this setup would not scale with many packages and servers. Are there good ways to manage this situation? I'm sure people do this all the time.

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• Issues With IIS Hosting Two Domains From Same Folder

  - by Bob Mc

  I have two different domain names that resolve to the same ASP.Net site. Both domains are hosted on the same server, which runs Windows Server 2003 and IIS6. The sites are differentiated in IIS Manager using host headers. However, both of the sites point to the same folder on the local drive for the site's page files. I am occasionally experiencing an ASP.Net error that says "The state information is invalid for this page and might be corrupted." I'm the site developer so I've addressed all the relevant code-related causes for this issue. However, I was wondering whether having two domains/sites sharing the same folder for an ASP.Net application might be causing this intermittent error. Also, is this generally a bad practice? Should I make separate, duplicate folders for each of the domains? Seems like that can become a maintenance headache.

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• NAS device for distributed team

  - by user5959

  We are a distributed team spread across 5 locations. We have a shared drive (1 TB data) at our former location that we are currently accessing via Hamachi VPN. Our shared drive is a network folder on a Windows Server located at one of our locations. The current connection speed is terrible. The upload speed at the current location of the shared drive is very slow. We looking for a NAS device that we can host at another location with better upload speed that all of us can access. I am looking for a NAS device that has these features: Minimal Maintenance as we do not have dedicated IT resources Access data on the device from multiple locations. Ability to create network drive (On Windows Computers Map Network Drive) Upload data from random client computers without having to install software. (Right now, we use LogMeIn Rescue's file manager) Ability handle slow or dropped connections when transferring files (Maximum size 1.5 GB)

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• Accessing a broken mdadm raid

  - by CarstenCarsten

  Hi! I used a western digital mybookworld (SOHO NAS storage using Linux) as backup for my Linux box. Suddenly, the mybookworld does not boot up any more. So I opened the box, removed the hard disk and put the hard disk into an external USB HDD case, and connected it to my Linux box. [ 530.640301] usb 2-1: new high speed USB device using ehci_hcd and address 3 [ 530.797630] scsi7 : usb-storage 2-1:1.0 [ 531.794844] scsi 7:0:0:0: Direct-Access WDC WD75 00AAKS-00RBA0 PQ: 0 ANSI: 2 [ 531.796490] sd 7:0:0:0: Attached scsi generic sg3 type 0 [ 531.797966] sd 7:0:0:0: [sdc] 1465149168 512-byte logical blocks: (750 GB/698 GiB) [ 531.800317] sd 7:0:0:0: [sdc] Write Protect is off [ 531.800327] sd 7:0:0:0: [sdc] Mode Sense: 38 00 00 00 [ 531.800333] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 531.803821] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 531.803836] sdc: sdc1 sdc2 sdc3 sdc4 [ 531.815831] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 531.815842] sd 7:0:0:0: [sdc] Attached SCSI disk The dmesg output looks normal, but I was wondering why the hardisk was not mounted at all. And why there are 4 different partitions on it. fdisk showed the following: root@ubuntu:/home/ubuntu# fdisk /dev/sdc WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): p Disk /dev/sdc: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00007c00 Device Boot Start End Blocks Id System /dev/sdc1 4 369 2939895 fd Linux raid autodetect /dev/sdc2 370 382 104422+ fd Linux raid autodetect /dev/sdc3 383 505 987997+ fd Linux raid autodetect /dev/sdc4 506 91201 728515620 fd Linux raid autodetect Oh no! Everything seems to be created as a mdadm software raid. Calling mdadm --examine with the different partitions seems to affirm that. I think the only partition I am interested in, is /dev/sdc4 (because it is the largest). But nevertheless I called mdadm --examine with every partition. root@ubuntu:/home/ubuntu# mdadm --examine /dev/sdc1 /dev/sdc1: Magic : a92b4efc Version : 00.90.00 UUID : 5626a2d8:070ad992:ef1c8d24:cd8e13e4 Creation Time : Wed Feb 20 00:57:49 2002 Raid Level : raid1 Used Dev Size : 2939776 (2.80 GiB 3.01 GB) Array Size : 2939776 (2.80 GiB 3.01 GB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 1 Update Time : Sun Nov 21 11:05:27 2010 State : clean Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Checksum : 4c90bc55 - correct Events : 16682 Number Major Minor RaidDevice State this 0 8 1 0 active sync /dev/sda1 0 0 8 1 0 active sync /dev/sda1 1 1 0 0 1 faulty removed root@ubuntu:/home/ubuntu# mdadm --examine /dev/sdc2 /dev/sdc2: Magic : a92b4efc Version : 00.90.00 UUID : 9734b3ee:2d5af206:05fe3413:585f7f26 Creation Time : Wed Feb 20 00:57:54 2002 Raid Level : raid1 Used Dev Size : 104320 (101.89 MiB 106.82 MB) Array Size : 104320 (101.89 MiB 106.82 MB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 2 Update Time : Wed Oct 27 20:19:08 2010 State : clean Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Checksum : 55560b40 - correct Events : 9884 Number Major Minor RaidDevice State this 0 8 2 0 active sync /dev/sda2 0 0 8 2 0 active sync /dev/sda2 1 1 0 0 1 faulty removed root@ubuntu:/home/ubuntu# mdadm --examine /dev/sdc3 /dev/sdc3: Magic : a92b4efc Version : 00.90.00 UUID : 08f30b4f:91cca15d:2332bfef:48e67824 Creation Time : Wed Feb 20 00:57:54 2002 Raid Level : raid1 Used Dev Size : 987904 (964.91 MiB 1011.61 MB) Array Size : 987904 (964.91 MiB 1011.61 MB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 3 Update Time : Sun Nov 21 11:05:27 2010 State : clean Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Checksum : 39717874 - correct Events : 73678 Number Major Minor RaidDevice State this 0 8 3 0 active sync 0 0 8 3 0 active sync 1 1 0 0 1 faulty removed root@ubuntu:/home/ubuntu# mdadm --examine /dev/sdc4 /dev/sdc4: Magic : a92b4efc Version : 00.90.00 UUID : febb75ca:e9d1ce18:f14cc006:f759419a Creation Time : Wed Feb 20 00:57:55 2002 Raid Level : raid1 Used Dev Size : 728515520 (694.77 GiB 746.00 GB) Array Size : 728515520 (694.77 GiB 746.00 GB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 4 Update Time : Sun Nov 21 11:05:27 2010 State : clean Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Checksum : 2f36a392 - correct Events : 519320 Number Major Minor RaidDevice State this 0 8 4 0 active sync 0 0 8 4 0 active sync 1 1 0 0 1 faulty removed If I read the output correctly everything was removed, because it was faulty. Is there ANY way to see the contents of the largest partition? Or seeing somehow which files are broken? I see that everything is raid1 which is only mirroring, so this should be a normal partition. I am anxious to do anything with mdadm, in fear that I destroy the data on the hard disk. I would be very thankful for any help.

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• Enable group policy for everything but the SBS?

  - by Jerry Dodge

  I have created a new group policy to disable IPv6 on all machines. There is only the one default OU, no special configuration. However, this policy shall not apply to the SBS its self (nor the other DC at another location on a different subnet) because those machines do depend on IPv6. All the rest do not. I did see a recommendation to create a new OU and put that machine under it, but many other comments say that is extremely messy and not recommended - makes it high maintenance when it comes to changing other group policies. How can I apply this single group policy to every machine except for the domain controllers? PS - Yes, I understand IPv6 will soon be the new standard, but until then, we have no intention to implement it, and it in fact is causing us many issues when enabled.

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• The simple "cron" that killed the cloud hosting option

  - by ron M.

  My SaaS application required a nightly cron job to run, analyze a database, send out e-mails and do some database maintenance work. This job cannot be triggered by user action. Almost every 'cloud' hosting solution balks at this to the point where they tell me "we cannot do this". Is this feature so exotic that cloud hosting providers simply don't care about? Am I using the wrong lingo here? should I use another concept? Do I have to go with dedicated hosting where i have "root access" as the only solution to this?

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• Log off as local "administrator" user, get blank login screen

  - by Force Flow

  I have an imaged lab environment running Windows 7 and attached to a domain. The local Administrator account is enabled for certain maintenance and prep tasks. Every time I logoff from the local Administrator account, it brings me back to the standard Ctrl+Alt+Del login screen. When I press that combination, all the user controls vanish except for the accessibility button down in the left hand corner. The only way I can seem to escape from this is to tap the power button to initiate a shutdown. Windows is up-to-date, and logging off as any other user operates normally. The "hide last user" local security policy option is enabled. Has anyone seen this phenomenon before and how can I stop this from happening?

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• new GIT release engineer here, being asked what is the best way to do development with git?

  - by marlene

  I have been searching the web for best practices, but don't see anything that is consistent. If you have an excellent development process that includes successful releases of your product as well as hotfixes/patches and maintenance releases and you use git. I would love to hear how you use git to accomplish this. Do you use branches, tags, etc? How do you use them. I am looking for details, please. Thanks for hosting this great forum. Lost in Gitland

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• SFTP (or similar) server automated setup for group spaces

  - by spikeheap

  I need to build a dedicated machine which will be used to allow our clients to upload and download files in a secure manner. Each client has multiple users, and I would rather not hand out generic client users which are used by multiple people. Each client should have access to their files only, and no others. There is no use-case (yet) for multiple clients interacting with a single file or space. Is there an existing solution to automating the creation and maintenance of these accounts, preferably with a view to integration with LDAP? Currently it looks like if we want to use SFTP with chrooted spaces they will need to be set up manually (or an automation hand-rolled). If a solution exists for a different (but still secure) transfer method, such as FTPS, I'm all ears.

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• JBoss view active user sessions

  - by user49080

  We have a JBoss server with a single J2EE on it. I wish to find out who are the current active users using that application. Does JBoss give me any utilities that lets me view those existing sessions? (NOT the count, but who all are logged in) The question is kinda lame, but so is my JBoss knowledge :) I checked the JBoss community, but it only had a couple of relative unanswered questions there. The information i'm looking for would help me in maintenance cycles. I do not wish to reboot the system when users are still using it. We also need to keep a track of any illegal activities on our server. Hence the requirement. Would appreciate any pointers :) Regards, Abhi

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• Windows domain login to temporary user

  - by amyassin

  We have a Windows domain with about 60 user accounts. Sometimes when a user logs in to his computer (already his account is created and has files there) windows logs him to a temporary user, displaying his name and everything, but without his files and data. This problem is rare and is solved simply by logging out and logging in. I noticed that it occurs at a close timings; they all happen at the same day if they did. My question is why does that happen? I want to trace the problem because it is so annoying when it happens, and I can't find a relative event that may be causing it: no server is down when it happens, no system maintenance or anything. We're running Windows Server 2003 R2 Standard, SP2 in the Domain Controller (and the same for the additional DC). The machines where this problem happened before are running Windows XP and Windows 7.

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• How to monitor a folder and trigger a command-line action when a file is created or edited?

  - by bigmattyh

  I need to set up some sort of a script on my Vista machine, so that whenever a file is added to a particular folder, it automatically triggers a background process that operates on the file. (The background process is just a command-line utility that takes the file name as an argument, along with some other predefined options.) I'd like to do this using native Windows features, if possible, for performance and maintenance reasons. I've looked into using Task Scheduler, but after perusing the trigger system for a while, I haven't been able to make much sense of it, and I'm not even sure if it's capable of doing what I need. I'd appreciate any suggestions. Thanks!

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• Setting up a reverse proxy [on hold]

  - by mrwooster

  I am looking for the best solution for setting up a very low maintenance reverse proxy for a production website (example.com). The setup is as follows: A blog with will be hosted on heroku, and will reside at example.com/blog A static info page which will be hosted on S3 and will reside at example.com/signup A dynamic content management system, provided and hosted by an external vendor which will respond to requests for any other pages. The two solutions which come to mind are: Use HAProxy Ask the external vendor to reverse proxy requests for /blog and /signup The obvious solution would be to use HAProxy, but, if at all possible, I would like to avoid having to setup and maintain another server (especially such a critical one). I came across a company called Snapt which offers hosted HAProxy solutions, but its more geared towards load-balancing than reverse proxying. Option 2 is a possibility, but gives us very little control over changes and configuration. I see a lot of sites hosting blogs on /blog so this must be fairly common practice, am I missing an obvious solution?

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• [CLOSED] IIS 6 is no longer installed after computer restart.

  - by jarrettcoggin

  [CLOSED] I was doing some maintenance on a build server at work and I changed some various settings (registry settings for custom applications, user permissions, etc.), then I restarted the machine. When the machine came back up, I couldn't access a website that is hosted on this machine, so I went digging around. It seems as if IIS6 was somehow uninstalled, which I know I didn't do. My question is: What would cause this? I've tried to reinstall it, uninstall it, reinstall it again, and nothing has changed. I still have a blank IIS Manager application (inetmgr), and no way to access these websites. BTW, the computer is running Windows Server 2003 R2 x64 Service Pack 2.

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• Sharepoint web services -- The HTTP request is unauthorized with client authentication scheme 'Ntlm'

  - by Pandincus

  I know there's a lot of questions on SO similar to this, but I couldn't find one for this particular issue. A couple of points, first: I have no control over our Sharepoint server. I cannot tweak any IIS settings. I believe our IIS server version is IIS 7.0. Our Sharepoint Server is anticipating requests via NTLM. Our Sharepoint Server is on the same domain as my client computer. I am using .NET Framework 3.5, Visual Studio 2008 I am trying to write a simple console app to manipulate Sharepoint data using Sharepoint Web Services. I have added the Service Reference, and the following is my app.config: <system.serviceModel> <bindings> <basicHttpBinding> <binding name="ListsSoap" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> <security mode="Transport"> <transport clientCredentialType="Ntlm" proxyCredentialType="Ntlm" /> </security> </binding> </basicHttpBinding> </bindings> <client> <endpoint address="https://subdomain.companysite.com/subsite/_vti_bin/Lists.asmx" binding="basicHttpBinding" bindingConfiguration="ListsSoap" contract="ServiceReference1.ListsSoap" name="ListsSoap" /> </client> </system.serviceModel> This is my code: static void Main(string[] args) { using (var client = new ListsSoapClient()) { client.ClientCredentials.Windows.ClientCredential = new NetworkCredential("username", "password", "domain"); client.GetListCollection(); } } When I call GetListCollection(), the following MessageSecurityException gets thrown: The HTTP request is unauthorized with client authentication scheme 'Ntlm'. The authentication header received from the server was 'NTLM'. With an inner WebException: "The remote server returned an error: (401) Unauthorized." I've tried various bindings and various code tweaks to try to authenticate properly, but to no avail. I'll list those below. I've tried the following steps: Using a native Win32 Impersonator before creating the client using (new Impersonator.Impersonator("username", "password", "domain")) using (var client = new ListsSoapClient()) { client.ClientCredentials.Windows.ClientCredential = new NetworkCredential("dpincas", "password", "domain"); client.GetListCollection(); } This produced the same error message. Setting TokenImpersonationLevel for my client credentials using (var client = new ListsSoapClient()) { client.ClientCredentials.Windows.AllowedImpersonationLevel = TokenImpersonationLevel.Impersonation; client.GetListCollection(); } This produced the same error message. Using security mode=TransportCredentialOnly <security mode="TransportCredentialOnly"> <transport clientCredentialType="Ntlm" /> </security> This resulted in a different error message: The provided URI scheme 'https' is invalid; expected 'http'. Parameter name: via However, I need to use https, so I cannot change my URI scheme. I've tried some other combinations that I can't remember, but I'll post them when I do. I'm really at wits end here. I see a lot of links on Google that say "switch to Kerberos", but my server seems to only be accepting NTLM, not "Negotiate" (as it would say if it was looking for Kerberos), so that is unfortunately not an option. Any help out there, folks?

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• Visual Studio 2010 and javascript debugging in external javascript files (embedded and minified).

  - by OKB

  Hi, The asp.net web application I'm working on is written in asp.net 3.5, the web app solution is upgraded from VS 2008 (don't know if that matter). The solution had javascript in the aspx files before I moved the javascript to external files. Now what I have done is to set all the javascript files to be embedded resource (except the jquery.js file) and I want to minify them when building for release by using the MS Ajax Minifier. I want to use the minified javascript files when I'm in the RELEASE mode and when I'm in DEBUG mode I want to use the "normal" versions. My problem now is that I'm unable to debug the javascript code in debug mode. When I set a break point a javascript function, VS is not breaking at all when the function is executed. I have added this entry in my web.config: <system.web> <compilation defaultLanguage="c#" debug="true" /> </system.web> Here how I register the jquery in an aspx-file: <asp:ScriptManagerProxy ID="ScriptManagerProxy1" runat="server"> <Scripts> <asp:ScriptReference Path="~/Javascript/jquery.js"/> </Scripts> </asp:ScriptManagerProxy> External javascript registration in the code-behind: #if DEBUG [assembly: WebResource("braArkivWeb.Javascript.jquery.js", "text/javascript")] [assembly: WebResource(braArkivWeb.ArkivdelSearch.JavaScriptResource, "text/javascript")] #else [assembly: WebResource("braArkivWeb.Javascript.jquery.min.js", "text/javascript")] [assembly: WebResource(braArkivWeb.ArkivdelSearch.JavaScriptMinResource, "text/javascript")] #endif public partial class ArkivdelSearch : Page { public const string JavaScriptResource = "braArkivWeb.ArkivdelSearch.js"; public const string JavaScriptMinResource = "braArkivWeb.ArkivdelSearch.min.js"; protected void Page_Init(object sender, EventArgs e) { InitPageClientScript(); } private void InitPageClientScript() { #if DEBUG this.Page.ClientScript.RegisterClientScriptResource(typeof(ArkivdelSearch), "braArkivWeb.Javascript.jquery.js"); this.Page.ClientScript.RegisterClientScriptResource(typeof(ArkivdelSearch), JavaScriptResource); #else this.Page.ClientScript.RegisterClientScriptResource(typeof(ArkivdelSearch), "braArkivWeb.Javascript.jquery.min.js"); this.Page.ClientScript.RegisterClientScriptResource(typeof(ArkivdelSearch), JavaScriptMinResource); #endif StringBuilder sb = new StringBuilder(); Page.ClientScript.RegisterStartupScript(typeof(ArkivdelSearch), "initArkivdelSearch", sb.ToString(), true); } } In the project file I have added this code to minify the javascripts: <!-- Minify all JavaScript files that were embedded as resources --> <UsingTask TaskName="AjaxMin" AssemblyFile="$(MSBuildProjectDirectory)\..\..\SharedLib\AjaxMinTask.dll" /> <PropertyGroup> <ResGenDependsOn> MinifyJavaScript; $(ResGenDependsOn) </ResGenDependsOn> </PropertyGroup> <Target Name="MinifyJavaScript" Condition=" '$(ConfigurationName)'=='Release' "> <Copy SourceFiles="@(EmbeddedResource)" DestinationFolder="$(IntermediateOutputPath)" Condition="'%(Extension)'=='.js'"> <Output TaskParameter="DestinationFiles" ItemName="EmbeddedJavaScriptResource" /> </Copy> <AjaxMin JsSourceFiles="@(EmbeddedJavaScriptResource)" JsSourceExtensionPattern="\.js$" JsTargetExtension=".js" /> <ItemGroup> <EmbeddedResource Remove="@(EmbeddedResource)" Condition="'%(Extension)'=='.js'" /> <EmbeddedResource Include="@(EmbeddedJavaScriptResource)" /> <FileWrites Include="@(EmbeddedJavaScriptResource)" /> </ItemGroup> </Target> Do you see what I'm doing wrong? Or what I'm missing in order to be able to debug my javascript code? Best Regards, OKB

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• Treeview - Hierarchical Data Template - Binding does not update on source change?

  - by ClearsTheScreen

  Greetings! I ran into this problem in my project (Silverlight 3 with C#): I have a TreeView which is data bound to, well, a tree. This TreeView has a HierarchicalDataTamplate in a resource dictionary, that defines various controls. Now I want to hide (Visibility.Collapse) some items depending on wether a node has children or not. Other items shall be visible under the same condition. It works like charm when I first bind the source tree to the TreeView, but when I change the source tree, the visibility in the treeview does not change. XAML - page: <controls:TreeView x:Name="SankeyTreeView" ItemContainerStyle="{StaticResource expandedTreeViewItemStyle}" ItemTemplate="{StaticResource SankeyTreeTemplate}"> <controls:TreeViewItem IsExpanded="True"> <controls:TreeViewItem.HeaderTemplate> <DataTemplate> <TextBlock Text="This is just for loading and will be replaced directly after the data becomes available..."/> </DataTemplate> </controls:TreeViewItem.HeaderTemplate> </controls:TreeViewItem> </controls:TreeView> XAML - ResourceDictionary <!-- Each node in the tree is structurally identical, hence only one Hierarchical Data Template that'll use itself on the children. --> <Data:HierarchicalDataTemplate x:Key="SankeyTreeTemplate" ItemsSource="{Binding Children}"> <Grid Height="24"> <TextBlock x:Name="TextBlockName" Text="{Binding Path=Value.name, Mode=TwoWay}" VerticalAlignment="Center" Foreground="Black"/> <TextBox x:Name="TextBoxFlow" Text="{Binding Path=Value.flow, Mode=TwoWay}" Grid.Column="1" Visibility="{Binding Children, Converter={StaticResource BoxConverter}, ConverterParameter=\{box\}}"/> <TextBlock x:Name="TextBlockThroughput" Text="{Binding Path=Value.throughput, Mode=TwoWay}" Grid.Column="1" Visibility="{Binding Children, Converter={StaticResource BoxConverter}, ConverterParameter=\{block\}}"/> <Button x:Name="ButtonAddNode"/> <Button x:Name="ButtonDeleteNode"/> <Button x:Name="ButtonEditNode"/> </Grid> </Data:HierarchicalDataTemplate> Now, as you can see, the TextBoxFlow and the TextBlockThroughput share the same space. What I aim at: The "Throughput" value of a node is how much of something 'flows' through this node from its children. It can't be changed directly, so I want to display a text block. Only leaf nodes have a TextBox to let someone enter the 'flow' that is generated in this leaf node. (I.E.: Node.Throughput = Node.Flow + Sum(Children.Throughput), where Node.Flow = 0 for each non-leaf.) What the BoxConverter (silly name -.-) does: public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { if ((value as NodeList<TreeItem>).Count > 1) // Node has Children? { if ((parameter as String) == "{box}") { return Visibility.Collapsed; } else ((parameter as String) == "{block}") { return Visibility.Visible; } } else { /* * As above, just with Collapsed and Visible switched */ } } The structure of the tree that is bound to the TreeView is essentially stolen from Dan Vanderboom (a bit too much to dump the whole code here), except that I here of course use an ObservableCollection for the children and the value items implement INotifyPropertyChanged. I would be very grateful if someone could explain to me, why inserting items into the underlying tree does not update the visibility for box and block. Thank you in advance!

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• Partial Trust in WPF 4

  - by Hadi Eskandari

  I've started a new project in WPF 4 (.NET 4) and trying to see if I can run it in xbap mode. I need to run the application in Full Trust with the new mode made available in .NET 4 which asks the end user if the full trust application should be run. I've set the "Security" mode to "Full Trust" application, and it builds just fine. When I run it, an exception is thrown and IE error message shows the following error. Any ways around it?? Startup URI: T:\projects\Hightech Sources\PayRoll\PayRoll.Web\publish\PayRoll.Web.xbap Application Identity: file:///T:/projects/Hightech%20Sources/PayRoll/PayRoll.Web/publish/PayRoll.Web.xbap#PayRoll.Web.xbap, Version=1.0.0.0, Culture=neutral, PublicKeyToken=1d910f49755d2c97, processorArchitecture=msil/PayRoll.Web.exe, Version=1.0.0.0, Culture=neutral, PublicKeyToken=1d910f49755d2c97, processorArchitecture=msil, type=win32 System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.CodeAccessSecurityEngine.Check(CodeAccessPermission cap, StackCrawlMark& stackMark) at System.Security.CodeAccessPermission.Demand() at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks) at System.Reflection.RuntimeAssembly.InternalLoadFrom(String assemblyFile, Evidence securityEvidence, Byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm, Boolean forIntrospection, Boolean suppressSecurityChecks, StackCrawlMark& stackMark) at System.Reflection.Assembly.LoadFrom(String assemblyFile) at PayRoll.Web.App.SelectAssemblies() at Caliburn.PresentationFramework.ApplicationModel.CaliburnApplication..ctor() at PayRoll.Web.App..ctor() at PayRoll.Web.App.Main() at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel) at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly() at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData) at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext) at System.Windows.Interop.PresentationApplicationActivator.CreateInstance(ActivationContext actCtx) at System.Activator.CreateInstance(ActivationContext activationContext) at System.AppDomain.Setup(Object arg) at System.AppDomain.nCreateInstance(String friendlyName, AppDomainSetup setup, Evidence providedSecurityInfo, Evidence creatorsSecurityInfo, IntPtr parentSecurityDescriptor) at System.Runtime.Hosting.ApplicationActivator.CreateInstanceHelper(AppDomainSetup adSetup) at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData) at System.Windows.Interop.PresentationApplicationActivator.CreateInstance(ActivationContext actCtx) at System.Activator.CreateInstance(ActivationContext activationContext) at System.Deployment.Application.DeploymentManager.ExecuteNewDomain() at System.Deployment.Application.InPlaceHostingManager.Execute() at MS.Internal.AppModel.XappLauncherApp.ExecuteDownloadedApplication() at System.Windows.Interop.DocObjHost.RunApplication(ApplicationRunner runner) at MS.Internal.AppModel.XappLauncherApp.XappLauncherApp_Exit(Object sender, ExitEventArgs e) at System.Windows.Application.OnExit(ExitEventArgs e) at System.Windows.Application.DoShutdown() at System.Windows.Application.ShutdownImpl() at System.Windows.Application.ShutdownCallback(Object arg) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.StartDispatcherInBrowser(Object unused) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) The action that failed was: Demand The type of the first permission that failed was: System.Security.Permissions.FileIOPermission

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• How to fix notifyDataSetChanged/ListView problems in dynamic Adapter wrapper Android

  - by ipaterson

  Summary: Trying to dynamically add heading rows to a ListView via a custom adapter wrapper. ListView is having trouble keeping the scroll position in sync. Runnable demo project provided. I would like to dynamically add items to a list based on the values in a CursorAdapter, several positions ahead of what the user is currently viewing. To do this, I have an adapter that wraps the CursorAdapter and keeps the new content indexed in a SparseArray. The ListView needs to be updated when items are added to the custom adapter, but I have met a lot of pitfalls trying to get that to work and would love some advice. The demo project can be downloaded here: http://dl.dropbox.com/u/15334423/DynamicSectionedList.zip In the demo, the headings are added dynamically by looking ahead 10 places to find the correct position where the list items switch to the next letter. Each implementation of notifyDataSetChanged has problems as described: Demo 1 This demo shows the importance of notifyDataSetChanged(). On clicking anything, the app will crash. This is due to some sanity checking in ListView... mItemCount != adapter.getItemCount(). Moral is, we need to notify the list that data has changed. Demo 2 The natural next step is to notify the ListView of changes when changes occur. Unfortunately, doing so while the ListView is scrolling firmly breaks all touch interaction until the app switches out of touch mode. You will need to "fling scroll" far enough to generate new headings in order to notice this. Tapping the screen will not cause the scroll to stop, and once stopped none of the list items will be clickable. This is due to some if (!mDataChanged) { /* do very important stuff */ } code in AbsListView.onTouchEvent(). Demo 3 To fix this, Demo 3 introduces a pendingChanges flag and the custom Adapter gains a notifyDataSetChangedIfNeeded() which can be called by the ListView once it has entered a "safe" state for changes. The first point where changes must be notified is in ListView.layoutChildren(), so I overrode that method to first notify of changes if needed, then call through. Fling past at least one heading then click a list item. This doesn't quite work right, though I'm not totally sure why. Tapping or selecting an item with the keyboard/trackball causes the list to refresh without properly syncing the old position. It scrolls to the top of the list which is not acceptable. Demo 4 The scroll problem in Demo 3 can be conquered, at least in touch mode. By adding a call to notifyDataSetChangedIfNeeded() on touch down, the data change happens to take place at such a time that all touch interaction works as expected and the list position is properly synced. However, I can't find an analog for that when the device is not in touch mode, not to mention the fact that it definitely seems like a hack. The list almost always scrolls back to the top, I can't find out what causes it to occasionally maintain the correct position. Since Android is fighting me at each step of the way, I feel like there should be a better approach. Please try the demo, if any fixes can be applied to get it working that would be great! Many thanks to anyone who can look into this, hopefully if we can get the code working it will be useful for others trying to accomplish the same optimization for lists with headings.

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• ssh permission denied

  - by Gitmo

  I am trying to ssh into a remote machine and I get the following debug messages: debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to xxx.xxx.x.xx [xxx.xxx.xx.x] port 22. debug1: Connection established. debug3: Not a RSA1 key file /home/hadoop/.ssh/id_rsa. debug2: key_type_from_name: unknown key type '-----BEGIN' debug3: key_read: missing keytype debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug2: key_type_from_name: unknown key type '-----END' debug3: key_read: missing keytype debug1: identity file /home/hadoop/.ssh/id_rsa type 1 debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1p1 Debian-6ubuntu2 debug1: match: OpenSSH_5.1p1 Debian-6ubuntu2 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.1p1 Debian-6ubuntu2 debug2: fd 3 setting O_NONBLOCK debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,[email protected],aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,[email protected],aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,[email protected],aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,[email protected],aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[email protected] debug2: kex_parse_kexinit: none,[email protected] debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: mac_setup: found hmac-md5 debug1: kex: server->client aes128-cbc hmac-md5 none debug2: mac_setup: found hmac-md5 debug1: kex: client->server aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug2: dh_gen_key: priv key bits set: 128/256 debug2: bits set: 511/1024 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug3: check_host_in_hostfile: filename /home/hadoop/.ssh/known_hosts debug3: check_host_in_hostfile: match line 20 debug1: Host '192.168.1.63' is known and matches the RSA host key. debug1: Found key in /home/hadoop/.ssh/known_hosts:20 debug2: bits set: 511/1024 debug1: ssh_rsa_verify: signature correct debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /home/hadoop/.ssh/id_rsa (0x241c110) debug1: Authentications that can continue: publickey,password debug3: start over, passed a different list publickey,password debug3: preferred gssapi-keyex,gssapi-with-mic,gssapi,publickey,keyboard-interactive debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Offering public key: /home/hadoop/.ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,password debug2: we did not send a packet, disable method debug1: No more authentication methods to try. Permission denied (publickey,password). What seems to be the problem?? I have tried everything, this is driving me nuts.

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• Disable input fields based on selection from drop down

  - by Thomas

  I have a drop down box and some text input fields below it. Based on which item from the drop down menu the user selects, I would like to disable some of the fields. I think I am failing to target the input fields correctly but I can't figure out what the problem is: Here is the script I have gotten so far: $(document).ready(function(){ var customfield = $('#customfields-tf-19-tf'); var customfield1 = $('#customfields-tf-20-tf'); var customfield2 = $('#customfields-tf-13-tf'); $(function() { var call_table = { 'Condominium': function() { customfield.attr("disabled"); }, 'Co-Op': function() { customfield1.attr("disabled"); }, 'Condop': function() { customfield2.attr("disabled"); } }; $('#customfields-s-18-s').change(function() { call_table[this.value](); }); }); }); And the layout for my form: <td width="260" class="left"> <label for="customfields-s-18-s">Ownership (Required):</label> </td> <td class="right"> <select name="customfields-s-18-s" class="dropdown" id="customfields-s-18-s" size="" > <option value="Condominium"> Condominium</option> <option value="Co-Op"> Co-Op</option> <option value="Condop"> Condop</option> </select> </td> </tr> <tr> <td width="260" class="left"> <label for="customfields-tf-19-tf">Maintenance:</label> </td> <td class="right"> <input type="text" title="Maintenance" class="textInput" name="customfields-tf-19-tf" id="customfields-tf-19-tf" size="40"/> </td> </tr> <tr id="newsletter_topics"> <td width="260" class="left"> <label for="customfields-tf-20-tf">Taxes:</label> </td> <td class="right"> <input type="text" title="Taxes" class="textInput" name="customfields-tf-20-tf" id="customfields-tf-20-tf" size="40" /> </td> </tr> <tr> <td width="260" class="left"> <label for="customfields-tf-13-tf" class="required">Tax Deductibility:</label> </td> <td class="right"> <input type="text" title="Tax Deductibility" class="textInput" name="customfields-tf-13-tf" id="customfields-tf-13-tf" size="40" /> </td> </tr>

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