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Suggestions for entering mobile development -- pure iPhone SDK, Android SDK, Mono Touch or Titanium

- by Tom Cabanski

I am entering mobile development. I have been working primarily in .NET since 1.0 came out in beta. Before that, I was mostly a C++ and Delphi guy and still dabble in C++ from time to time. I do web apps quite a bit so I am reasonably proficient with Javascript, JQuery and CSS. I have also done a few Java applications. I started web programming with CGI and live mostly in the ASP.NET MVC world these days. I am trying to decide on which platform/OS and tool to select. I am concerned with the size of the market available for my applications as well as the marketibility of the skills I will pick up. The apps I have in mind would work on both phones and pads. Some aspects of what I have in mind will play better on the bigger screens that will be available on pads. Here are the options I am considering: Apple iPhone/iPad using pure Apple SDK (Objective-C) Apple iPhone/iPad using Mono Touch (C#) Android using pure Android SDK (Java) Multiple platforms using something like Titanium to generate native apps from web technologies (HTML, CSS and Javascript) Multiple platforms using HTML5 web applications that run in the browser (HTML, CSS and Javascript). Which option would you choose? Do you have a different suggestion? What are the pros and cons?

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jQuery addClass on $.post

- by Tim

I am basically trying to create a small registration form. If the username is already taken, I want to add the 'red' class, if not then 'green'. The PHP here works fine, and returns either a "YES" or "NO" to determine whether it's ok. The CSS: input { border:1px solid #ccc; } .red { border:1px solid #c00; } .green { border:1px solid green; background:#afdfaf; } The Javascript I'm using is: $("#username").change(function() { var value = $("#username").val(); if(value!= '') { $.post("check.php", { value: value }, function(data){ $("#test").html(data); if(data=='YES') { $("#username").removeClass('red').addClass('green'); } if(data=='NO') { $("#username").removeClass('green').addClass('red'); } }); } }); I've got the document.ready stuff too... It all works fine because the #test div html changes to either "YES" or "NO", apart from the last part where I check what the value of the data is. Here is the php: $value=$_POST['value']; if ($value!="") { $sql="select * FROM users WHERE username='".$value."'"; $query = mysql_query($sql) or die ("Could not match data because ".mysql_error()); $num_rows = mysql_num_rows($query); if ($num_rows 0) { echo "NO"; } else { echo "YES"; } }

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Dojo addOnLoad, but is Dojo loaded?

- by adamrice32

I've encountered what seems like a chicken & egg problem, and have what I think is a logical solution. However, it occurred to me that others must have encountered something similar, so I figured I'd float it out there for the masses. The situation is that I want to use dojo's addOnLoad function to queue up a number of callbacks which should be executed after the DOM has completed rendering on the client side. So what I'm doing is as follows: <html> <head> <script type="text/javascript" src="dojo.xd.js"></script> ... </head> <body> ... <script type="text/javascript"> dojo.addOnLoad( ... ); dojo.addOnLoad( ... ); ... </script> </body> </html> Now, the issue is that I seem to be calling dojo.addOnLoad before the entire Dojo library has been downloaded the browser. This makes sense in a way, because the inline SCRIPT contents should be executed before the entire DOM is loaded (and the normal body onload callback is triggered). My question is this - is my approach sound, or would it make more sense to register a normal/standard body onload JavaScript callback to call a function, which does the same work that each of the dojo.addOnLoads is doing in the SCRIPT block. Of course, this begs the question, why would you ever then use dojo.addOnLoad if you're not guaranteed that the Dojo library will be loaded prior to using the library? Hopefully this situation makes sense to someone other than me. Seems like someone else may have encountered this situation. Thoughts? Best Regards, Adam Rice

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Rails Nested Forms Attributes not saving if Fields Added with jQuery

- by looloobs

Hi I have a rails form with a nested form. I used Ryan Bates nested form with jquery tutorial and I have it working fine as far as adding the new fields dynamically. But when I go to submit the form it does not save any of the associated attributes. However if the partial builds when the form loads it creates the attribute just fine. I can not figure out what is not being passed in the javascript that is failing to communicate that the form object needs to be saved. Any help would be great. class Itinerary < ActiveRecord::Base accepts_nested_attributes_for :trips end itinerary/new.html <% form_for ([@move, @itinerary]), :html => {:class => "new_trip" } do |f| %> <%= f.error_messages %> <%= f.hidden_field :move_id, :value => @move.id %> <% f.fields_for :trips do |builder| %> <%= render "trip", :f => builder %> <% end %> <%= link_to_add_fields "Add Another Leg to Your Trip", f, :trips %> <p><%= f.submit "Submit" %></p> <% end %> application_helper.rb def link_to_remove_fields(name, f) f.hidden_field(:_destroy) + link_to_function(name, "remove_fields(this)") end def link_to_add_fields(name, f, association) new_object = f.object.class.reflect_on_association(association).klass.new fields = f.fields_for(association, new_object, :child_index => "new_#{association}") do |builder| render(association.to_s.singularize, :f => builder) end link_to_function(name, h("add_fields(this, \"#{association}\", \"#{escape_javascript(fields)}\")")) end application.js function add_fields(link, association, content) { var new_id = new Date().getTime(); var regexp = new RegExp("new_" + association, "g") $(link).parent().before(content.replace(regexp, new_id)); }

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sIfr (3.436) and IE8 - My h1 and h2 are flickering

- by André

I am using sIfr (3.436) for my H1 and H2 tags. In IE8 the text flickers and jumps around alot. See example: http://www.addenergy.no/drilling-production/category352.html I have tried various font-tuning as explained at Wiki.Novemberborn, but can't get a good result. Any help to lead in the right direction is appreciated! The sifr-config.js looks like this (h1/h2 is basically the same): sIFR.fitExactly = true; sIFR.fixWrap = true; sIFR.forceWidth = true; sIFR.replace(fedraSerif, { selector: '#placeholder-top h1', css: '.sIFR-root { background-color: #FFFFFF; color: #000000; }', ratios: [8, (...), 1.26] }); And sifr.css (bottom): @media screen { .sIFR-active #placeholder-top h1 { visibility: hidden; font-family: Verdana; font-size:2.5em; line-height:40px; } .sIFR-active #placeholder-top h2 { visibility: hidden; font-family: Verdana; font-size:2em; line-height:30px; } } My style.css (general for the site has): html, body { font-family: Verdana, Arial, Sans-serif; margin: 0; padding: 0; color: #333; background: #cccccc url('images/background.gif') repeat-y top center; } h1 { font-size: 35px; line-height: 40px; } #placeholder-top h1 { margin: 20px 120px 10px 5px; font-size:2.5em; display:block; line-height: 40px; } h2 { line-height: 30px; color: #009bdb; } #placeholder-top h2 { margin: 0px 120px 20px 5px; font-size:2em; display:block; line-height: 30px; }

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Jquery ui sortable clone helper not working

- by Jeremy Seekamp

Maybe I don't understand how clone works with sortable, but here is what I would like to do. When sorting an item I would like a clone of the item I am dragging remain until I stop drop the item in its new position. Here's the code: <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.2/jquery-ui.min.js"></script> <style type="text/css"> .sort { width: 150px; } .ui-state-highlight { background-color: #000; height:2px; } </style> </head> <body> <div> <ul class="sort"> <li>Item 1</li> <li>Item 2</li> <li>Item 3</li> <li>Item 4</li> </ul> </div> <script type="text/javascript"> $(function() { $('.sort').sortable({ helper: 'clone', placeholder: 'ui-state-highlight', opacity: '.5' }) }) </script> </body> </html> Thanks in advance for the help!

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How to check a digital certificate?

- by StackedCrooked

I have extracted a certificate from a cable modem. Now I want to verify if this certificate is valid. If I understand correctly, the verification process consists of having the issuer sign the subject's public key and then comparing the result with the subject's signature. This signing process is done using the issuer's private key, which nobody but the issuer has access to. So even if I have both certificates on my PC, there is no way for me to verify the subject's validity. From this I can only conclude that the verification must be implemented as a remote service. The problem is that I don't know what remote service I need to access to verify this certificate. The issuer is "AVM GmbH Cable Modem Root Certificate Authority". How can I find the webservice for verification? Is there standard lookup mechanism for this?

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Trying to install pdo_oci via PECL fails asking for PDO extension

- by Igoru

I'm using Linux Mint 11 (based on Ubuntu 11.04) and I need to use PHP with Oracle through PDO, a requirement of the framework we will work with. I've installed various PDO extensions using the normal apt-get method, like php5-mysql, etc, and they loaded just fine, along with the initial PDO extension. But there's no package for Oracle bindings. So, when I try to run sudo pecl install pdo_oci it throws me this: WARNING: "pear/PDO_OCI" is deprecated in favor of "channel://http://www.php.net/pdo_oci/ext/pdo_oci" pear/PDO_OCI requires PHP extension "pdo" (version >= 1.0) No valid packages found install failed How can I add this channel, or is there a better way to install the PDO_OCI extension?

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How to use dd to make splitted ISO images from an storage device?

- by Gustavo Bandeira

This is a double question, I just hope it's valid. I need to know how to use dd to make splitted ISO images from some storage device, I'm doing it through SSH: the process is slow and the risk of faling at the mid of the operation (1) is high then I need to know how to make these splitted ISO images from my storage device. (2) I'm searching for some reference on dd, it could be a book or a good website about it for when any doubt arises. 1 - I'm doing it on a ~60GB storage device, it took me a whole day to copy ~10GB from this disk. 2 - For curious people, I'm trying to recover an accidentaly deleted file from an iPod, until now I've been able to make the whole process, I just need to improve it beucase I left it copying the disk yesterday: Today it gave me an error when it was at ~10GB.

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Does a silverlight video player always need source address in URL format only?

- by Manish

I have seen on many sites the silverlight video player. I noticed that all of them took a URL as the source of the video file. Can a silverlight player play a video file kept locally? I mean a simple HTML file kept in a folder with the xap (say VideoPlayer.xap) and the video (say ABC.avi) file. The html file would contain an object tag. For example: <object height="240" width="500" type="application/x-silverlight-2" data="data:application/x-silverlight,"> <param value="VideoPlayer.xap" name="source"> <param value="onSilverlightError" name="onerror"> <param value="white" name="background"> <param value="cc=true,markers=true,markerpath=markers_movie21.xml,m=ABC.avi" name="initParams"> <a style="text-decoration: none;" href="http://go.microsoft.com/fwlink/?LinkID=115261"> <img style="border-style: none;" alt="Get Microsoft Silverlight" src="http://go.microsoft.com/fwlink/?LinkId=108181"> </a> </object>

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Create Zip File In Windows and Extract Zip File In Linux

- by Yan Cheng CHEOK

I had created a zip file (together with directory) under Windows as follow : package sandbox; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; /** * * @author yan-cheng.cheok */ public class Main { /** * @param args the command line arguments */ public static void main(String[] args) { // These are the files to include in the ZIP file String[] filenames = new String[]{"MyDirectory" + File.separator + "MyFile.txt"}; // Create a buffer for reading the files byte[] buf = new byte[1024]; try { // Create the ZIP file String outFilename = "outfile.zip"; ZipOutputStream out = new ZipOutputStream(new FileOutputStream(outFilename)); // Compress the files for (int i=0; i<filenames.length; i++) { FileInputStream in = new FileInputStream(filenames[i]); // Add ZIP entry to output stream. out.putNextEntry(new ZipEntry(filenames[i])); // Transfer bytes from the file to the ZIP file int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } // Complete the entry out.closeEntry(); in.close(); } // Complete the ZIP file out.close(); } catch (IOException e) { e.printStackTrace(); } } } The newly created zip file can be extracted without problem under Windows, by using http://www.exampledepot.com/egs/java.util.zip/GetZip.html However, I realize if I extract the newly created zip file under Linux, using http://www.exampledepot.com/egs/java.util.zip/GetZip.html, I will get a file named "MyDirectory\MyFile.txt" instead of MyFile.txt being placed under folder MyDirectory. I try to solve the problem by changing the zip file creation code to String[] filenames = new String[]{"MyDirectory" + "/" + "MyFile.txt"}; But, is this an eligible solution, by hard-coded the seperator? Will it work under Mac OS? (I do not have a Mac to try out)

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IE7 CSS bug aligning <img> with text in a <ul>

- by Artem Russakovskii

I've been banging my ahead on this IE7 bug for the last few days and it's time to resort to the mind of the crowd. I have the following HTML and CSS: http://beerpla.net/for_www/ie7_test/test.html The goal is to have a <ul>, with each <li> containing a small icon and some text. Multiline text would be aligned to itself and not wrap under the image. I've tried using float:left on the image and a bunch of other things, and finally I thought the position:absolute would work for sure but in IE7 I consistently see the text pop off to the next line and get misaligned with the image: This is what I expect it to look like: I even tried to make the div display:inline which kind of worked but then started wrapping under the image for long lines, so it was no good. zoom:1 also produced a similar effect. I'm at a loss at the moment. This code works fine in all other browsers. IE7 is a special, very special child. Any ideas? Thank you. Edit: If you have IE8, you can emulate IE7 by pressing F12 and then Alt-7.

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Server port 16080 problem: webserver adds the port number 16080 in the URL

- by Juri

Hello everybody. On my wordpress website one little thing doesn't work. Sometimes the Webserver adds the port number 16080 in the URL, which leads to an error (network timeout). Wrong: http://www.example.com:16080/about-us/weekly-program/?month=may&yr=2010 Correct: http://www.example.com/about-us/weekly-program/?month=may&yr=2010 Has someone a "Server port 16080 problem fix"? Is it possible, that I need to add a ServerName directive to the config file to tell the domain name of the server? Cheers Juri !!!update!!! PS: Here is the site configuration, don't ask me to change the 16080 to 80, because that screwes up everyone else's websites... Please let me know what you think of the configuration: ## Default Virtual Host Configuration <VirtualHost *:16080> ServerName example.com ServerAdmin [email protected] DocumentRoot "/Library/WebServer/Documents/WMsites/example.com/wordpress" DirectoryIndex "index.html" "index.php" CustomLog "/var/log/httpd/access_log" "%{PC-Remote-Addr}i %l %u %t \"%r\" %>s %b" ErrorLog "/var/log/httpd/error_log" ErrorDocument 404 /error.html <IfModule mod_ssl.c> SSLEngine Off SSLLog "/var/log/httpd/ssl_engine_log" SSLCertificateFile "/etc/certificates/Default.crt" SSLCertificateKeyFile "/etc/certificates/Default.key" SSLCipherSuite "ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:!SSLv2:+EXP:+eNULL" </IfModule> <IfModule mod_dav.c> DAVLockDB "/var/run/davlocks/.davlock100" DAVMinTimeout 600 </IfModule> <Directory "/Library/WebServer/Documents/WMsites/example.com/wordpress"> Options All -Indexes -ExecCGI -Includes +MultiViews <IfModule mod_dav.c> DAV Off </IfModule> AllowOverride All </Directory> <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_METHOD} ^TRACE RewriteRule .* - [F] </IfModule> <IfModule mod_alias.c> </IfModule> LogLevel warn ServerAlias www.example.com ServerAlias example.com </VirtualHost>

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How to use nsupdate to create NAPTR record

- by Jon Skarpeteig

What's a working example for creating a NAPTR record using nsupdate against Bind9? man nsupdate sais: update add {domain-name} {ttl} [class] {type} {data...} Adds a new resource record with the specified ttl, class and data. But I can't seem to find the correct format for NAPTR My attempt: echo -e 'update add enum.example.com 60 IN NAPTR 1.1.1.1.1."u"."E2U+sip"."!^.*[email protected]!" .'"\nsend"|nsupdate results in: invalid rdata format: not a valid number syntax error

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dojox.grid.DataGrid populated from Servlet

- by jeff porter

I'd like to hava a Dojo dojox.grid.DataGrid with its data from a servlet. Problem: The data returned from the servlet does not get displayed, just the message "Sorry, an error has occured". If I just place the JSON string into the HTML, it works. ARRRRGGH. Can anyone please help me! Thanks Jeff Porter Servlet code... public void doGet(HttpServletRequest req, HttpServletResponse resp) { res.setContentType("json"); PrintWriter pw = new PrintWriter(res.getOutputStream()); if (response != null) pw.println("[{'batchId':'2001','batchRef':'146'}]"); pw.close(); } HtmL code... <div id="gridDD" dojoType="dojox.grid.DataGrid" jsId="gridDD" style="height: 600x; width: 100%;" store="ddInfo" structure="layoutHtmlTableDDDeltaSets"> </div> var rawdataDDInfo = ""; // empty at start ddInfo = new dojo.data.ItemFileWriteStore({ data: { identifier: 'batchId', label: 'batchId', items: rawdataDDInfo } }); <script> function doSelectBatchsAfterDate() { var xhrArgs = { url: "../secure/jsonServlet", handleAs: "json", preventCache: true, load: function(data) { var xx =dojo.toJson(data); var ddInfoX = new dojo.data.ItemFileWriteStore({data: xx}); dijit.byId('gridDD').setStore(ddInfoX); }, error: function(error) { alert("error:" + error); } } //Call the asynchronous xhrGet var deferred = dojo.xhrGet(xhrArgs); } </script> <img src="go.gif" onclick="doSelectBatchsAfterDate();"/>

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Using virt-install to mount multiple cdrom drives/images

- by Dana the Sane

I would like to create a windows xp guest from the windows xp upgrade cd I have, along with one of a few full versions I have around. However, when I reach the stage in the installer where I am prompted to insert a full version cd, the installer can't find it, i.e.: Setup could not read the CD you inserted, or the CD is not a valid Windows CD.. Is there a work-around for this?, my Googling didn't uncover anything. I've tried various combinations of mounting .iso files and specifying disks, such as: $sudo virt-install --accelerate --connect qemu:///system -n xpsp1 -r 2048 --disk ./vm/winxp_sp1.iso,device=cdrom --disk ./vm/windows.qcow2,size=12 --vnc --noautoconsole --os-type windows --os-variant winxp --vcpus 2 -c /dev/cdrom --check-cpu If I try to specify multiple cdrom drives, I receive an error: virt-install --accelerate --connect qemu:///system -n xpsp1 -r 2048 --disk ./vm/winxp_sp1.iso,device=cdrom --disk /dev/cdrom,device=cdrom --disk ./vm/windows.qcow2,size=12 --vnc --noautoconsole --os-type windows --os-variant winxp --vcpus 2 --check-cpu Starting install... ERROR IDE CDROM must use 'hdc', but target in use.

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gitweb on Ubuntu Server as Location/Directory instead of Virtual Host

- by mbx

Since DynDNS no longer resolves subdomains for free I have use gitweb on a subdir of the apache2. Usual suspects such as Pro Git suggest something like <VirtualHost *:80> ServerName gitserver DocumentRoot /srv/gitosis/repositories/ <Directory /srv/gitosis/repositories/> Options ExecCGI +FollowSymLinks +SymLinksIfOwnerMatch AllowOverride All order allow,deny Allow from all AddHandler cgi-script cgi DirectoryIndex gitweb.cgi </Directory> </VirtualHost> I tried various variations using Location and Directory tags with different attribute combinations without any notable success. My first Idea was close to the following Alias /gitweb /srv/gitosis/repositories <Location /gitweb> AuthType Basic AuthName "gitweb Repository view" AuthUserFile /etc/apache2/gitweb.passwd Require valid-user SSLRequireSSL SetEnv GITWEB_CONFIG /etc/gitweb.conf AddHandler cgi-script cgi DirectoryIndex /usr/lib/cgi-bin/gitweb.cgi </Location> Apache is in the gitosis group, the repositories are readable and executable for that group. So, what is the indended way to get websvn run on Ubuntu 10?

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How to remove old indexed URLs from Google?

- by Gok Demir

I used Cs-cart for a site. Default installation SEO is not suitable for Turkish accented characters such as "ö" which maps to automatically "ae". Then I modified the php code and now it substitutes "ö" with "o" and "s"-"s" etc. Also I changed a category name to a better one. My problem is, google indexed both previous versions and new versions. Previous wrong urls gives 404 error. I used sitemap addon and send it to google and sitemap does not include wrong urls. However these old urls are still indexed on google. What can I do to remove them. For example http://www.google.com.tr/search?q=%C3%A7ak%C4%B1l+ta%C5%9Flar%C4%B1ndan+babil+site:eeski.com&hl=tr&client=firefox-a&hs=Z31&rls=com.ubuntu:en-US:official&filter=0 gives two top results old wrong url leads to 404: http://www.eeski.com/kitap-dergi/bilim-ve-teknik/cakl-talarndan-babil-kulesine-rakamlarn-evrensel-tarihi-ii.html right current url: http://www.eeski.com/kitap/bilim-ve-teknik/cakil-taslarindan-babil-kulesine-rakamlarin-evrensel-tarihi-ii.html What could I make google only index current urls stated on sitemap?

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Google Maps API DirectionsRendererOptions not working?

- by YWE

I am trying to use DirectionsRenderer to display a DirectionsResult without the route list. According to the API version 3 documentation, there is a "hideRouteList" property of the DirectionsRendererOptions object that when set to true should hide the route list. I cannot get it to work. Is this a bug or am I just not coding this correctly? Following is my code. <html> <head> <title>Driving Directions</title> <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"> </script> <script type="text/javascript">  </script> </head> <body onLoad="initialize();"> <div id="dir-container"></div> </body> </html>

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Issues with cross-domain uploading

- by meder

I'm using a django plugin called django-filebrowser which utilizes uploadify. The issue I'm having is that I'm hosting uploadify.swf on a remote static media server, whereas my admin area is on my django server. At first, the browse button wouldn't invoke my browser's upload. I fixed this by modifying the sameScriptAccess to always instead of sameDomain. Now the progress bar doesn't move at all, I probably have to enable some server setting for cross domain file uploading, or most likely actually host a separate upload script on my media server. I thought I could solve this by adding a crossdomain.xml to enable any site at the root of both servers, but that doesn't seem to solve it. $(document).ready(function() { $('#id_file').uploadify({ 'uploader' : 'http://media.site.com:8080/admin/filebrowser/uploadify/uploadify.swf', 'script' : '/admin/filebrowser/upload_file/', 'scriptData' : {'session_key': '...'}, 'checkScript' : '/admin/filebrowser/check_file/', 'cancelImg' : 'http://media.site.com:8080/admin/filebrowser/uploadify/cancel.png', 'auto' : false, 'folder' : '', 'multi' : true, 'fileDesc' : '*.html;*.py;*.js;*.css;*.jpg;*.jpeg;*.gif;*.png;*.tif;*.tiff;*.mp3;*.mp4;*.wav;*.aiff;*.midi;*.m4p;*.mov;*.wmv;*.mpeg;*.mpg;*.avi;*.rm;*.pdf;*.doc;*.rtf;*.txt;*.xls;*.csv;', 'fileExt' : '*.html;*.py;*.js;*.css;*.jpg;*.jpeg;*.gif;*.png;*.tif;*.tiff;*.mp3;*.mp4;*.wav;*.aiff;*.midi;*.m4p;*.mov;*.wmv;*.mpeg;*.mpg;*.avi;*.rm;*.pdf;*.doc;*.rtf;*.txt;*.xls;*.csv;', 'sizeLimit' : 10485760, 'scriptAccess' : 'always', //'scriptAccess' : 'sameDomain', 'queueSizeLimit' : 50, 'simUploadLimit' : 1, 'width' : 300, 'height' : 30, 'hideButton' : false, 'wmode' : 'transparent', translations : { browseButton: 'BROWSE', error: 'An Error occured', completed: 'Completed', replaceFile: 'Do you want to replace the file', unitKb: 'KB', unitMb: 'MB' } }); $('input:submit').click(function(){ $('#id_file').uploadifyUpload(); return false; }); }); The page I'm viewing this on is http://site.com/admin/filebrowser/browse on port 80.

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IE History Tracking, IFRAMES, and Cross Domain error...

- by peiklk

So here's the deal. We have a Flash application that is running within an HTML file. For one page we call a legacy reporting system in ASP.NET that is within an IFRAME. This page then communicates back to the Flash application using cross-domain scripting (document.domain = "domain" is set in both pages. THIS ALL WORKS. Now the kicker. Flash has history tracking enabled. This loads the history.js file that created a div tag to store page changes so the back and forward buttons work in the browser. Which works for Firefox and Chrome as they create a div tag. HOWEVER In Internet Explorer, history.js creates another IFRAME (instead of a DIV) called ie_historyFrame. When the ScriptResource.axd code attempts to access this with: var frameDoc = this._historyFrame.contentWindow.document; we get an "Access is Denied" error message. ARGH! We've tried getting a handle to this IFRAME and inserting the document.domain code. FAIL. We've tried editing the historytemplate.html file that flex also uses to include document.domain... FAIL. I've tried to edit the underlying ASP.NET page to disable history tracking in the ScriptManager control. FAIL. At my wit's end on this one. We have users who need to use IE to access this site. They are big clients who we cannot tell to just use Firefox. Any suggestions would be greatly appreciated.

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Firefox -- Dynamically embedding <svg> element in SVG

- by zourtney

I am trying dynamically to append an <svg> element within an existing SVG island on an XHTML page (Firefox 3.6.3). Done manually, this works as expected: <svg xmlns="http://www.w3.org/2000/svg"> <svg xmlns="http://www.w3.org/2000/svg"> ... </svg> </svg> However, if you dynamically add this element using JavaScript, the browser crashes. Simple example: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:svg="http://www.w3.org/2000/svg"> <head> <title>SVG island example</title> <script type="text/javascript"><![CDATA[ function crash( ) { svgs = document.getElementsByTagNameNS( "http://www.w3.org/2000/svg", "svg" ); for ( var i = 0; i < svgs.length; i++ ) { var e = document.createElementNS( "http://www.w3.org/2000/svg", "svg" ); svgs[i].appendChild( e ); } } ]]></script> </head> <body> <svg id="mySVG" xmlns="http://www.w3.org/2000/svg"> </svg> <button onclick="crash()">Crash Firefox</button> </body> </html> Interestingly, if I do a getElementById, it works fine. Interesting, but not particularly helpful in my situation since I'm storing pointers to SVGDocuments. Example: function doesntCrash( ) { var svg = document.getElementById( "mySVG" ); var e = document.createElementNS( "http://www.w3.org/2000/svg", "svg" ); svg.appendChild( e ); } As far as I can tell, this is a Firefox bug. Does anyone have any insight into this matter?

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Nested Routes and Parameters for Rails URLs (Best Practice)

- by viatropos

Hey there, I have a decent understanding of RESTful urls and all the theory behind not nesting urls, but I'm still not quite sure how this looks in an enterprise application, like something like Amazon, StackOverflow, or Google... Google has urls like this: http://code.google.com/apis/ajax/ http://code.google.com/apis/maps/documentation/staticmaps/ https://www.google.com/calendar/render?tab=mc Amazon like this: http://www.amazon.com/books-used-books-textbooks/b/ref=sa_menu_bo0?ie=UTF8&node=283155&pf_rd_p=328655101&pf_rd_s=left-nav-1&pf_rd_t=101&pf_rd_i=507846&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=1PK4ZKN4YWJJ9B86ANC9 http://www.amazon.com/Ruby-Programming-Language-David-Flanagan/dp/0596516177/ref=sr_1_1?ie=UTF8&s=books&qid=1258755625&sr=1-1 And StackOverflow like this: http://stackoverflow.com/users/169992/viatropos http://stackoverflow.com/questions/tagged/html http://stackoverflow.com/questions/tagged?tagnames=html&sort=newest&pagesize=15 So my question is, what is best practice in terms of creating urls for systems like these? When do you start storing parameters in the url, when don't you? These big companies don't seem to be following the rules so hotly debated in the ruby community (that you should almost never nest URLs for example), so I'm wondering how you go about implementing your own urls in larger scale projects because it seems like the idea of not nesting urls breaks down at anything larger than a blog. Any tips?

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Object.Watch with disabled attribute

- by Benjamin Fleming

<html> <head> <script type="text/javascript"> window.onload = function() { var btn = document.getElementById("button"); var tog = document.getElementById("toggle"); tog.onclick = function() { if(btn.disabled) { btn.disabled = false; } else { btn.disabled = true; } }; //btn.watch("disabled", function(prop, val, newval) { }); }; </script> </head> <body> <input type="button" value="Button" id="button" /> <input type="button" value="Toggle" id="toggle" /> </body> </html> If you test this code, the Toggle button will successfully enable and disable the other button. However, un-commenting the btn.watch() line will somehow always set the disabled tag to true. Any ideas?

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Wrong DNS query in Active directory network with NetBIOS enabled client

- by koankoder

The setup: Active Directory is enabled on the network (abcd.com) We have a single character host name (1.abcd.com) one of the desktop has an old XP with NetBIOS stuff enabled The Problem Whenever we query for any host name from the XP machine, the first character alone is taken for DNS query (one.abcd.com will query for o.abcd.com, two.abcd.com will query for t.abcd.com) Even if we give some IP, the application queries with numeric prefix (10.x.x.x will query for 1.abcd.com).Since we already have 1.abcd.com, all query and traffic ends up in 1.abcd.com After discussion with network guys, it seems netbios DNS queries by having some prefix etc. but none of them is actually sure on what is happening. Is there any docs which can explain this behavior ? Is this valid behavior in NetBIOS environment ?

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