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• Postfix qmgr process causes heavy overload on mailservers

  - by Mattias

  We are using Postfix as MTA for our e-mailmarketing software and once in a while we see that the load on one of the mailservers rises above 5. The load is caused by the qmgr-process which is the heart of Postfix and I see that it is consuming a lot of CPU resources. The process seems to be stuck because after 15 minutes it is still doing the samething and still increasing the load. Once I restart the postfix service the load rapidly decreases to below 1 and Postfix continues to send e-mails without any problems. I'm wondering if anyone else has encountered this problem and if people have suggestions on how to prevent it. The problem shows up on all our mailservers but almost never at more than 1 at the time. It seems to be triggered only when we are sending a mailing but the size (10 or 100.000 e-mails doesn't seem to make a difference). It maybe happens once a week or even less often and the time and day is also different every time. We tried to solve the problem by decreasing the amount of messages qmgr is allowed to process but this didn't solve it. We are using Postfix 2.5.5 on Debian Lenny 5.0.8 (postfix is installed through the default Debian repository). No special messages can be found in the logs (syslog, messages, mail.*). Thank you for your time

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• Upstart can't determine my process' pid

  - by sirlark

  I'm writing an upstart script for a small service I've written for my colleagues. My upstart job can start the service, but when it does it only outputs queryqueue start/running; note the lack of a pid as given for other services. #/etc/init/queryqueue.conf description "Query Queue Daemon" author "---" start on started mysql stop on stopping mysql expect fork env DEFAULTFILE=/etc/default/queryqueue umask 007 kill timeout 30 pre-start script #if [ -f "$DEFAULTFILE" ]; then # . "$DEFAULTFILE" #fi [ ! -f /var/run/queryqueue.sock ] || rm -rf /var/run/queryqueue.sock #exec /usr/local/sbin/queryqueue -s /var/run/queryqueue.sock -d -l /tmp/upstart.log -p $PIDFILE -n $NUM_WORKERS $CLEANCACHE $FLUSHCACHE $CACHECONN end script script #Originally this stanza didn't exist at all if [ -f "$DEFAULTFILE" ]; then . "$DEFAULTFILE" fi exec /usr/local/sbin/queryqueue -s /var/run/queryqueue.sock -d -l /tmp/upstart.log -p $PIDFILE -n $NUM_WORKERS $CLEANCACHE $FLUSHCACHE $CACHECONN end script post-start script for i in `seq 1 5` ; do [ -S /var/run/queryqueue.sock ] && exit 0 sleep 1 done exit 1 end script The service in question is a python script, which when run without error, forks using the code below right after checking command line options and basic environmental sanity, so I tell upstart to expect fork. pid = os.fork() if pid != 0: sys.exit(0) The script is executable, and has a python shebang. I can send the TERM signal to the process manually, and it quits gracefully. But running stop queryqueue claims queryqueue stop/waiting but the process is still alive and well. Also, it's logs indicate it never received the kill signal. I'm guessing this is because upstart doesn't know which pid it has. I've also tried expect daemon and leaving the expect clause out entirely, but there's no change in behaviour. How can I get upstart to determine the pid of the exec'd process

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• Process PHP files from a network share in a vmware virtual machine

  - by nhinkle

  As a testing environment, I have set up a vmware virtual machine running Windows Server 2008 R2. I have Apache and PHP installed (as part of the xampp package). I am doing the development outside of the VM, and so want Apache to serve PHP files from a VM shared folder (which appears as a network share in the VM). I have done this by creating an NTFS symbolic link in Apache's htdocs directory. I can access this directory from the browser, and plain-text files are readable. However, PHP fails to process files, instead returning the following error: Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0 Fatal error: Unknown: Failed opening required 'C:/xampplite/htdocs/path/to/file.php' (include_path='.;C:\xampplite\php\PEAR') in Unknown on line 0 It appears to be a permissions issue — PHP doesn't seem to be allowed to read the file to process it. However, Apache has no problem opening files in the directory. I cannot figure out how to give PHP the necessary permissions to process the file. Does anybody know of a way to make this work, or else another solution for getting the files into the VM automatically while I develop on the host machine?

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• Delete on windows vista and seven -- discovery process

  - by M'vy

  Hi SUs! I've recently encountered a problem. Using svn at work I needed to clear some space. As you may know svn directories are full of sub-directories and files. So the delete process begins with a step of discovering the items to be deleted (I guess this is for displaying the progress bar). But in my case it ended up to be still running after I watched Braveheart (Off-topic: good film in my opinion. On-topic: and it last 2h50) and counting 440 000+ files. I finally decided to cut off the process and use the good old cmd with a del <directory> to do the job. (Done in some minutes) So I'm wondering if someone know how to override the system to make it actually begins the process while scanning the other items? At the end, I just want the file to be deleted and I don't care the number of files to be deleted. On the contrary I care about the time it takes. Thanks

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• Upstart Script on Centos 6

  - by MarcusMaximus

  I'm trying to create an upstart script to run a python script on startup. In theory it looks simple enough but I just can't seem to get it to work. I'm using a skeleton script I found here and altered. description "Used to start python script as a service" author "Me <[email protected]>" # Stanzas # # Stanzas control when and how a process is started and stopped # See a list of stanzas here: http://upstart.ubuntu.com/wiki/Stanzas#respawn # When to start the service start on runlevel [2345] # When to stop the service stop on runlevel [016] # Automatically restart process if crashed respawn # Essentially lets upstart know the process will detach itself to the background expect fork # Start the process script exec su nonrootuser -c "python /usr/local/scripts/script.py" end script The test script I want it to run is currently a simple python script that runs without any issue when run from a terminal. #!/usr/bin/python2 import os, sys, time if __name__ == "__main__": for i in range (10000): message = "shotgunUpstartTest " , i , time.asctime() , " - Username: " , os.getenv("USERNAME") #print message time.sleep(60) out = open("/var/log/scripts/scriptlogfile", "a") print >> out, message out.close() The location/var/log/scripts has permissions 777 The file /usr/local/scripts/script.py has permissions 775 The upstart script /etc/init.d/pythonupstart.conf has permissions 755

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• Powershell Get-Process cannot connect to remote computer

  - by amandion

  I've been struggling with this for a few hours and can't figure this out. I have two Windows 7 computers. One is my workstation that is using Powershell to do administrative maintenance. The other is the machine I'd like to use Powershell remoting on to execute remote Powershell cmdlets on. On both computers, I've enabled Powershell remoting and added all computers to TrustedHosts with the * value. On the remote computer, I've started the Remote registry service and ensured that the DCOM, Winmgmt and the Winrm services are running. Firewall is disabled on remote machine too. The cmdlet I try to run is: Get-Process -ComputerName $name Where $name is the name of the remote machine. I keep getting an error saying that it could not connect to the remote PC. I've also tried using the IP and I get the same error. These PCs are not in a domain. I am able to do the following successfully: Invoke-Command {get-Process} -ComputerName $name -Credential $creds Where $name is the machine name and $creds is the user name and password for the remote computer's local Admin account. This gives me the same output I would expect. While this is an acceptable workaround, I am curious, why doesn't using get-process with remoting work as it should? I've seen a few articles on the web suggesting people have had success with it on its own. Each time I am using Powershell on my workstation with elevated privileges. Any ideas?

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• Run Python script at startup using upstart

  - by MarcusMaximus

  I'm trying to create an upstart script to run a python script on startup. In theory it looks simple enough but I just can't seem to get it to work. I'm using a skeleton script I found here and altered. description "Used to start python script as a service" author "Me <[email protected]>" # Stanzas # # Stanzas control when and how a process is started and stopped # See a list of stanzas here: http://upstart.ubuntu.com/wiki/Stanzas#respawn # When to start the service start on runlevel [2345] # When to stop the service stop on runlevel [016] # Automatically restart process if crashed respawn # Essentially lets upstart know the process will detach itself to the background expect fork # Start the process script exec python /usr/local/scripts/script.py end script The test script I want it to run is currently a simple python script that runs without any issue when run from a terminal. #!/usr/bin/python2 import os, sys, time if __name__ == "__main__": for i in range (10000): message = "UpstartTest " , i , time.asctime() , " - Username: " , os.getenv("USERNAME") #print message time.sleep(60) out = open("/var/log/scripts/scriptlogfile", "a") print >> out, message out.close() The location/var/log/scripts has permissions 777 The file /usr/local/scripts/script.py has permissions 775 The upstart script /etc/init.d/pythonupstart.conf has permissions 755

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• linux: per-process monitor, every 10 minutes, with history access

  - by Inbar Rose

  I really didn't know a better way to ask my question, hence you get a horribly named question. I will explain what i want to do, maybe that will help you help me. I would like to have my linux machine continuously monitor (every 10 minutes) all the processes on my machine. The information from each process that I require is the name, CPU usage, allocated (virtual) memory, and resident (ram) memory. If these periodic reports were to be looked at, they would look something like this: PROCESS CPU RAM VIRTUAL name1 % MB MB name2 % MB MB ...etc..etc These reports should be stored in such a way that I can access them at a later date by giving a date/time scope (range). For instance, if I want to see the history of my processes from 12:00:00 1.12.12 till 12:00:00 2.12.12 I can - and it should give me the history of the processes for every 10 minutes between those date/time borders. The format of the return is not important, that will be handled by a script anyway and can be modified into anything I need. I have looked into a few things so far, but have not found something that clearly meets my needs. Among the things i searched: sar, free(1), top(1).. and a few other things. It should be a simple issue, i can already see all this information by simply looking at my htop, but i need only a tool that will gather the desired fields for me for each processes every 10 minutes, and then also let me extract slices of that data based on date/time scopes (ranges). note: I have limited experience with linux, so please give detailed information. note2: The desired output will be something like this (after receiving the desired range) CPU USAGE BY PROCESS: proc_nameA 1,2,2,2,2,2...... numbers represent % usage every 10 minutes... proc_nameB 4,3,3,6,1,2...... The same idea with the other information.

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• send sms from background thread in blackberry using j2me

  - by SWATI

  hey i made a lot of search and found some similar types of code. I tried for gsm method 1 gives IllegalArgumentException try { MessageConnection _mc = (MessageConnection)Connector.open("sms://"); TextMessage tm = (TextMessage) _mc.newMessage(MessageConnection.TEXT_MESSAGE); tm.setPayloadText(smsText); tm.setAddress("965xxxxxxx"); _mc.send(tm); _mc.close(); }catch(exception e){} method 2: gives java.lang.error exception try { MessageConnection _mc = (MessageConnection)Connector.open("sms://"); TextMessage tm = (TextMessage) _mc.newMessage(MessageConnection.TEXT_MESSAGE, "//9790XXXXXX"); tm.setPayloadText(text); _mc.send(tm); _mc.close(); }catch(Exception e){} I think the problem is with address i also tried : but no success +91965xxxxxxx , 0091965xxxxxxx , 0965xxxxxxx How my application works---- i have created 2 applications-- 1) Application 1 is a background app that is a System module as well as startup application. 2) Another is a uiapplication the background app runs in background.If there comes an incoming call then a flag value is set in persistent object and after checking that value as true the sms is send to that no from whom call is made.

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• [iPhone] Background color during flip view animation/transition?

  - by Rob S.

  I have some pretty standing flipping action going on: [UIView beginAnimations:@"swapScreens" context:nil]; [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.view cache:YES]; [UIView setAnimationDuration:1.0]; [self.view exchangeSubviewAtIndex:0 withSubviewAtIndex:1]; [UIView commitAnimations]; To Apple's credit, this style of animation is amazingly easy to work with. Very cool, and I've been able to animate transitions, flips, fades etc. throughout the app very easily. Question: During the flip transition, the background visible 'behind' the two views during the flip is white and I'd like it to be black. I've: Set the background of the containing view (self.view above) - no dice. I really thought that would work. Set the background of each view to black - no dice. I didn't think this would work although you give different things a shot to understand better :) Google'd like crazy; keep landing on Safari-related listings. Thanks in advance!

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• Odd background image resizing on animating UIView

  - by Woody

  I have a UIView in the middle of a view that I am using as a game playing area (in a 2d cocoa view). This image has a background image of the same size as the view. Resizing the view I use animation to make it look smooth (and that works fine). However, when the animation starts, the background image immediately changes size, tiling or being clipped to a size that when the animation finishes, the background image is physically the same size. I don't want this, I want the image to always fit the view, regardless of the view size. UIImage *bgImage = [UIImage imageNamed:@"head.png"]; ... // resize the image returning another image self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:resizedImage]; [UIView beginAnimations:@"resizeView" context:nil]; [UIView setAnimationDuration:.5]; int localViewSize = ... // work out view sizes self.view.frame = CGRectMake(... ,localViewSize,localViewSize); [UIView commitAnimations]; It looks very odd as it jumps to a different size, then animates to the original size. I am guessing that maybe I would have to make a separate view underneath my main view but is that the only way?

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• java TrayIcon using image with transparent background

  - by Jack

  I am using the following code to set a tray icon in Windows and Linux. It works wonderful in Windows and works okay in Linux. In Linux (Ubuntu) I have my panel set to be (somewhat) transparent and when I add a GIF (with a transparent background) the background of the icon shows up all grey and ugly (see image, green diamond "!")....Any ideas on how to make the GIF image I am adding "keep" its transparent background? and the image I am using, if you'd like to test: import java.awt.*; import java.awt.event.*; public class TrayFun { static class ShowMessageListener implements ActionListener { TrayIcon trayIcon; String title; String message; TrayIcon.MessageType messageType; ShowMessageListener( TrayIcon trayIcon, String title, String message, TrayIcon.MessageType messageType) { this.trayIcon = trayIcon; this.title = title; this.message = message; this.messageType = messageType; } public void actionPerformed(ActionEvent e) { trayIcon.displayMessage(title, message, messageType); } } public static void main(String args[]) { Runnable runner = new Runnable() { public void run() { if (SystemTray.isSupported()) { final SystemTray tray = SystemTray.getSystemTray(); Image image = Toolkit.getDefaultToolkit().getImage("green_info.png"); PopupMenu popup = new PopupMenu(); final TrayIcon trayIcon = new TrayIcon(image, "The Tip Text", popup); trayIcon.setImageAutoSize(true); MenuItem item = new MenuItem("Close"); item.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { tray.remove(trayIcon); } }); popup.add(item); try { tray.add(trayIcon); } catch (AWTException e) { System.err.println("Can't add to tray"); } } else { System.err.println("Tray unavailable"); } } }; EventQueue.invokeLater(runner); } }

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• Change UIButton Background Image more than once per second

  - by beta.services

  I am currently working with the iPhone SDK. I have a NSTimer that changes the background image of a UIButton. Once this is complete, it will trigger the same action again (reset the NSTimer) for a predetermined number of times. My problem is that if my NSTimer is set to execute more than once per second. (0.75, say) The background image wont change. I am using NSLog to check that the event fires. But the button image will just remain in its original state. Is there any way to change the background image more often than once per second? This is my timer : [NSTimer scheduledTimerWithTimeInterval: tmpLvlSpeed target: self selector: @selector(simPressRed:) userInfo: nil repeats: NO]; And the code to change the image: [btnRed setImage:[UIImage imageNamed:@"btn_red.png"] forState:UIControlStateNormal]; if tmpLvlSpeed is less than 1.0, the button image will never change. Even though the simPressRed function will still fire. Any clues? Is there an update cycle I can modify?

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• CSS opacity and child elements

  - by Rob

  <style type="text/css"> div#foo { background: #0000ff; width: 200px; height: 200px; opacity: 0.30; filter: alpha(opacity = 30); } div#foo>div { color: black; opacity:1; filter: alpha(opacity = 100); } </style> <div id="foo"> <div>Lorem</div> <div>ipsum</div> <div>dolor</div> </div> In the above example, the opacity of div#foo is inherited by child elements, causing the text to become nearly unreadable. I suppose it's wrong to say it is inherited, the opacity is applied to the parent div and the children are part of that, so attempting to override it for the child elements doesn't work because technically they are opaque. I typically just use an alpha png background image in such cases, but today i'm wondering if there's a better way to make a background of a div semi-transparent without affecting the contents.

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• Flex redrawing background when Scrolling, degrafa: How ?.

  - by coulix

  Hi Everyone, I am using a canvas which has a degrafa background, so far so good. However when scrolling apears the background (degrafa grid) does not get redrawn. In the code the bg strokes are linked to the container height. The thing is container.height does not change even when scrolling. How do i get the heigh of the whole area so i can set the new height to my degrafa background ? it looks like this. <mx:Canvas id="blackBoard" width="100%" height="100%" x="0" y="0" backgroundColor="#444444" clipContent="true"> <!-- Degrafa Surface --> <degrafa:Surface id="boardSurfaceContainer"> <degrafa:strokes> <degrafa:SolidStroke id="whiteStroke" color="#EEE" weight="1" alpha=".2"/> </degrafa:strokes> <!-- Grid drawing --> <degrafa:GeometryGroup id="grid"> <degrafa:VerticalLineRepeater count="{blackBoard.width / ApplicationFacade.settings.GRID_SIZE}" stroke="{whiteStroke}" x="0" y="0" y1="{blackBoard.height}" offsetX="0" offsetY="0" moveOffsetX="{ApplicationFacade.settings.GRID_SIZE}" moveOffsetY="0"/> <degrafa:HorizontalLineRepeater count="{blackBoard.height / ApplicationFacade.settings.GRID_SIZE}" stroke="{whiteStroke}" x="0" y="0" x1="{blackBoard.width}" offsetX="0" offsetY="0" moveOffsetX="0" moveOffsetY="{ApplicationFacade.settings.GRID_SIZE}"/> </degrafa:GeometryGroup> </degrafa:Surface>

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• Put together tiles in android sdk and use as background

  - by Jon

  In a feeble attempt to learn some Android development am I stuck at graphics. My aim here is pretty simple: Take n small images and build a random image, larger than the screen with possibility to scroll around. Have an animated object move around on it I have looked at the SDK examples, Lunar Lander especially but there are a few things I utterly fail to wrap my head around. I've got a birds view plan (which in my head seems reasonably sane): How do I merge the tiles into one large image? The background is static so I figure I should do like this: Make a 2d array with refs to the tiles Make a large Drawable and draw the tiles on it At init draw this big image as the background At each onDraw redraw the background of the previous spot of the moving object, and the moving object at its new location The problem is the hands on things. I load the small images with "Bitmap img1 = BitmapFactory.decodeResource (res, R.drawable.img1)", but then what? Should I make a canvas and draw the images on it with "canvas.drawBitmap (img1, x, y, null);"? If so how to get a Drawable/Bitmap from that? I'm totally lost here, and would really appreciate some hands on help (I would of course be grateful for general hints as well, but I'm primarily trying to understand the Graphics objects). To make you, dear reader, see my level of confusion will I add my last desperate try: Drawable drawable; Canvas canvas = new Canvas (); Bitmap img1 = BitmapFactory.decodeResource (res, R.drawable.img1); // 50 x 100 px image Bitmap img2 = BitmapFactory.decodeResource (res, R.drawable.img2); // 50 x 100 px image canvas.drawBitmap (img1, 0, 0, null); canvas.drawBitmap (img2, 50, 0, null); drawable.draw (canvas); // obviously wrong as draw == null this.setBackground (drawable); Thanks in advance

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• JQuery - Fade in new Background Image?

  - by JasonS

  Hi, I think I may be trying something that isn't possible. I was recently tasked to create a html version of the flash site. On the flash site when you click on the body the image changes. I have done this with JQuery. Its brilliant! However.. it isn't "flash" enough. The powers that be want a fade effect between images. This is where I have come completely undone. This is how my script works at the moment. Images are stored in a div called photos. This is hidden. <div id="photos"> <img src="image.jpg" alt="Some caption" style="#page-bg-color" /> </div> When the page is loaded jquery checks to see if the first image is loaded. If it isn't then a loading symbol spins. When the image is loaded, it becomes the body background. $("body").css('background', 'url(' + photos[currentImage]["url"] + ') no-repeat 50% 50% fixed ' + photos[currentImage]["background"]); I have tried the following. I have tried animate. However, this doesn't work. I have tried this plugin: http://plugins.jquery.com/project/bgImageTransition This doesn't work either. It appears to clone the tag and do something. I assume it isn't working because you cannot clone the body tag. That or it is really old and is no longer compatible with the current version of JQuery. I fear that I have coded my way down a dead end. Does anybody know how I could make this work?

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• In Corona SDK the background image always cover other images

  - by user1446126

  I'm currently making a tower defense game with Corona SDK. However, while I'm making the gaming scene, The background scene always cover the monster spawn, I've tried background:toBack() ,however it's doesn't work.Here is my code: module(..., package.seeall) function new() local localGroup = display.newGroup(); local level=require(data.levelSelected); local currentDes = 1; monsters_list = display.newGroup() --The background local bg = display.newImage ("image/levels/1/bg.png"); bg.x = _W/2;bg.y = _H/2; bg:toBack(); --generate the monsters function spawn_monster(kind) local monster=require("monsters."..kind); newMonster=monster.new() --read the spawn(starting point) in level, and spawn the monster there newMonster.x=level.route[1][1];newMonster.y=level.route[1][2]; monsters_list:insert(newMonster); localGroup:insert(monsters_list); return monsters_list; end function move(monster,x,y) -- Using pythagoras to calauate the moving distace, Hence calauate the time consumed according to speed transition.to(monster,{time=math.sqrt(math.abs(monster.x-x)^2+math.abs(monster.y-y)^2)/(monster.speed/30),x=x, y=y, onComplete=newDes}) end function newDes() currentDes=currentDes+1; end --moake monster move according to the route function move_monster() for i=1,monsters_list.numChildren do move(monsters_list[i],200,200); print (currentDes); end end function agent() spawn_monster("basic"); end --Excute function above. timer2 = timer.performWithDelay(1000,agent,10); timer.performWithDelay(100,move_monster,-1); timer.performWithDelay(10,update,-1); move_monster(); return localGroup; end and the monster just stuck at the spawn point and stay there. but, When i comment these 3 lines of code: --local bg = display.newImage ("image/levels/1/bg.png"); --bg.x = _W/2;bg.y = _H/2; --bg:toBack(); The problem disappear Any ideas??Thanks for helping

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• PhpBB3: adding background to specific php generated text input without affecting the other text inputs

  - by user1780055

  I have created a custom PhpBB3 style and desperately since a few hours tried to add a background image to a specific comment text area. With firebug I checked if the comment text area had a class and it does, so I tried some css variations and finally tried: sn-inputComment { background: url("{T_THEME_PATH}/images/pencil.png") repeat-x left top #FFFFFF;} { I also tried to find and manipulate the php generated text area but no success. Non of my methods worked. I will provide you all with a tinylink url to my forum with a test user and password access. User: test Password: 123456 url: http://tinyurl.com/9yqpxdb Now when you are logged in you should be redirected to the correct url and you will see a a few text boxes with "Write a comment...". I would be very happy if you could tell me what I did wrong, why im not able to add a background to the text input without having my search boxes and "what is on your mind box" affected. I appreciate your time and hope that this can be somehow solved. Sincerely, Daniel

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• div with absolute position behind the normal flow

  - by vasion

  i am trying to get a div to be my background and am using absolute positioning to achieve it. everything works fine except for the fact that it appears above anything in the normal flow and fiddling with z-indexes does absolutely nothing. <div id="blind"> <div id="blindbackground"></div> <div id="blindcontainer"><div class="loader"><img class='loader' src="/img/loader.gif"/></div></div> <div id="blindclosecontainer"><img id='blindclose' src="/img/close.gif"/></div> </div> and this is the css: #blind{ position :absolute; width:100%; z-index: 2; border-bottom: 1px silver solid; } #blindclosecontainer{ text-align: right; } #blindbackground{ position:absolute; top:0; width:100%; height:100%; background-color: white; filter:alpha(opacity=60); opacity:0.6; } #blindcontainer{ margin:auto; width:500px; background-color: white; padding:10px; } .loader{ margin: auto; width:18px; margin-top:10px; margin-bottom: 5px; }

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• How to stop body background displaying between two tables in Iphone Safari

  - by Jason

  The following markup when viewed in Safari on Iphone and Ipad displays the body background color for 1 pixel between the two tables. What is this and how do I stop it? <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Title</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <style type="text/css"> body{ background:#000; } table{ background:#ffffff; width:50px; border:0; margin:0; padding:0; } </style> </head> <body> <table border="0" cellpadding="0" cellspacing="0"> <tr> <td>a</td> </tr> </table> <table border="0" cellpadding="0" cellspacing="0"> <tr> <td>b</td> </tr> </table> </body> </html>

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• Background Image Overlapped Problem with jQuery

  - by Devyn

  Hi, Here is my working page. I attached buttons to white bishop and you can move around but left images are overlapped by right images. I think the problem is with CSS. The brief structure is here. <script> $(document).ready(function(){ $('#top').click(function(){ $('#p81').animate({top: "-=64px"}, 100); }); </script> <style> div.chess_board{ height: 512px; position: relative; width: 512px; } div.chess_square{ height:64px; position: absolute; width:64px; } div.chess_square.white { background: none repeat scroll 0 0 #ffffff; } . . . div.chess_piece{ background-image: url("sprite.png"); height: 64px; width: 64px; position: absolute; } div.chess_piece.bishot.white{ background-position: -64px 0; } </style> <div class="chess_board"> <div id="b81" class="chess_square white" style="top: 448px; left: 64px;"> <div class="chess_square_inner"></div> <div id="p81" class="chess_piece bishot white"></div> </div> </div> <input type="button" id="top" value="top" />

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• WPF: issue updating UI from background thread

  - by Ted Shaffer

  My code launches a background thread. The background thread makes changes and wants the UI in the main thread to update. The code that launches the thread then waits looks something like: Thread fThread = new Thread(new ThreadStart(PerformSync)); fThread.IsBackground = true; fThread.Start(); fThread.Join(); MessageBox.Show("Synchronization complete"); When the background wants to update the UI, it sets a StatusMessage and calls the code below: static StatusMessage _statusMessage; public delegate void AddStatusDelegate(); private void AddStatus() { AddStatusDelegate methodForUIThread = delegate { _statusMessageList.Add(_statusMessage); }; this.Dispatcher.BeginInvoke(methodForUIThread, System.Windows.Threading.DispatcherPriority.Send); } _statusMessageList is an ObservableCollection that is the source for a ListBox. The AddStatus method is called but the code on the main thread never executes - that is, _statusMessage is not added to _statusMessageList while the thread is executing. However, once it is complete (fThread.Join() returns), all the stacked up calls on the main thread are executed. But, if I display a message box between the calls to fThread.Start() and fThread.Join(), then the status messages are updated properly. What do I need to change so that the code in the main thread executes (UI updates) while waiting for the thread to terminate? Thanks.

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• HTML Setting Active with different background colour

  - by danit

  Here is my HTML List: <ul id="navlist"> <li class="item1"><a href="#">One</a></li> <li class="item2"><a href="#">Two</a></li> <li class="item3"><a href="#">Three</a></li> <li class="item4"><a href="#">Four</a></li> <li class="item5"><a href="#">Five</a></li> <li class="item6"><a href="#">Six</a></li> </ul> Each .itemx has a different background colour, so I need the active state to take into account the class. Obviously something like: <li class="item6" id="active"><a href="#">Six</a></li> #active.item6 { background: red; } Would work but IE6 doesnt like chained items in CSS so doesnt work when other items are set out in the CSS. Can I do this with jQuery where each item has a different background colour when 'active?

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• Change row table color with javaScript

  - by Slim Mils

  I try to change the background of rows in my table with javaScript but it's not working. This is my code. However I tried to create my table with html and it's work. P.S : I want to use webkit. Help please. Code : var table = document.getElementById("tab"); var rowCount = table.rows.length; for(var i=0;i<6;i++) { row = table.insertRow(rowCount); row.id = "row"+i; cell1 = row.insertCell(0); var content = document.createElement("output"); content.innerHTML = i ; cell1.appendChild(content); rowCount++; } $(document).ready(function(){ $('td').each(function(i) { $('#tab').on('click', '#row'+i, function(){ document.getElementById("row"+i).style.background = 'white'; //alert(i); }); }); //example2 $('#td1').on('click', function(){ document.getElementById("td1").style.background = 'white'; }); });

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