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Dynamically change image SRC

Posted on 2006-10-19
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Medium Priority
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Last Modified: 2012-05-05
Hello,

How does one dynamically alter the background image based upon the screen resolution? Basically, I have 2 images. If the user is a laptop user, they will always be 1024. If they are a desktop user, they will always be 800. I want to alter tbe <Body Background="somepath.gif"> entry to reflect that when they open the page.

<Script language="javascript">
            function loadBackground ()      {
            if (screen.width<=800) {
                  //alert('800');
                                                //Document.write(Body HTML for Image800.gif)
                  }
                  else  {
                  //alert('greater than');
                                                //Document.write(Body HTML for Image1024.gif)
                  }
            }
</Script>
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Question by:SWRO
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2 Comments
 
LVL 5

Accepted Solution

by:
aaronchan earned 500 total points
ID: 17771010
Remember to add onload event on your <body>.  Good luck!

<Script language="javascript">
      function loadBackground()     {
            if (screen.width <= 800) {
                  //alert('800');
                  //Document.write(Body HTML for Image800.gif)
                  document.body.background = 'http://i.i.com.com/cnwk.1d/i/hdft/redball.gif';
            }
            else  {
                  //alert('greater than');
                  //Document.write(Body HTML for Image1024.gif)
                  document.body.background = 'http://www.experts-exchange.com/images/10Years.gif';
            }
      }
</Script>
<body onload="loadBackground();">
</body>
0
 

Author Comment

by:SWRO
ID: 17771405
Thanks!
0

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