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Javascript Rollover help 1

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ncar35b

ncar35b

Technical User
Jan 10, 2003
55
US
Hello, I'm fairly new to javascript and was hoping someone could show me, or point me to some code that does a standard rollover for buttons, but also changes an image in one set area on the screen. For example, there are 6 buttons that all have an 'on' and an 'off' state. When the button is rolled over, the 'on' state would show up and also an image in the upper right hand corner would also change with it.

If anyone can point me to some code that does this or something similar, I'd appreciate it!

Thanks, Josh
 
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Well, lotsa folks use the tried, true, and tested "MM_swapImage()" javascript. Look it up and it'll handle your rollovers pretty well. It has a lot of good features, some of which are over-kill (IMHO)... you can also use something like:

Code: 
<html>
<head>
<script type=&quot;text/javascript&quot; language=&quot;javascript&quot;>
// we'll set the default &quot;top&quot; image here...
var topImgDef = &quot;/images/default.jpg&quot;
var currBtnID = '';
function imgSwap(btnID, newImg, topImg){
  if (btnID == currBtnID) return true;
  currBtnID = btnID;
  document.getElementById(btnID).src = newImg;
  document.getElementById('topPicture').src = topImg;
}
</script>
</head>
<body>
<img id=&quot;topPicture&quot; src=&quot;/images/default.jpg&quot;>
<img id=&quot;btn1&quot; src=&quot;btn1.jpg&quot; onmouseover=&quot;imgSwap(this.id,'btn1_hi.jpg','topPic1.jpg');&quot; onmouseout=&quot;imgSwap(this.id,'btn1.jpg',topImgDef);&quot;>
<img id=&quot;btn2&quot; src=&quot;btn2.jpg&quot; onmouseover=&quot;imgSwap(this.id,'btn2_hi.jpg','topPic2.jpg');&quot; onmouseout=&quot;imgSwap(this.id,'btn2.jpg',topImgDef);&quot;>
<img id=&quot;btn3&quot; src=&quot;btn3.jpg&quot; onmouseover=&quot;imgSwap(this.id,'btn3_hi.jpg','topPic3.jpg');&quot; onmouseout=&quot;imgSwap(this.id,'btn3.jpg',topImgDef);&quot;>
</body>
</html>

...something like that oughta work...
 
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Oops. Sorry 'bout that... dang.

I was exiting the function whenever the ID matched the previous ID... which rather precludes anything happening on mouseout... this should work.

Please note: this is written on the fly, it could, undoubtedly, be made more efficient.

Code: 
<html>
<head>
<script type=&quot;text/javascript&quot; language=&quot;javascript&quot;>
// we'll set the default &quot;top&quot; image here...
var topImgDef = &quot;/images/profile/text_blank.gif&quot;
var currBtnID = '';
function imgSwap(onoff, btnID, newImg, topImg){
  if ((onoff=='on')&&(btnID == currBtnID)) return true;
  currBtnID = (onoff == 'on') ? btnID:'';
  document.getElementById(btnID).src = newImg;
  document.getElementById('topPicture').src = topImg;
}
</script>
</head>
<body>
<img id=&quot;topPicture&quot; src=&quot;images/profile/text_blank.gif&quot;>

<img id=&quot;btn1&quot; src=&quot;images/profile/off_one.jpg&quot; onmouseover=&quot;imgSwap('on',this.id,'images/profile/on_one.jpg','images/profile/text_one.gif');&quot; onmouseout=&quot;imgSwap('off',this.id,'images/profile/off_one.jpg',topImgDef);&quot;>

<img id=&quot;btn2&quot; src=&quot;images/profile/off_two.jpg&quot; onmouseover=&quot;imgSwap('on',this.id,'images/profile/on_two.jpg','images/profile/text_two.gif');&quot; onmouseout=&quot;imgSwap('off',this.id,'images/profile/off_two.jpg',topImgDef);&quot;>

<img id=&quot;btn3&quot; src=&quot;images/profile/off_three.jpg&quot; onmouseover=&quot;imgSwap('on',this.id,'images/profile/on_three.jpg','images/profile/text_three.gif');&quot; onmouseout=&quot;imgSwap('off',this.id,'images/profile/off_three.jpg',topImgDef);&quot;>
</body>
</html>
 
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