when you use jQuery and prototype javascript frameworks togather on the same page, it creates conflicts.
jQuery has provided a resolution to this conflict. The resolution goes as below:
Overriding the $-function:
1) you can override that default by calling jQuery.noConflict() at any point after jQuery and the other library have both loaded. For example:
<html>
<head>
<script src="prototype.js"></script>
<script src="jquery.js"></script>
<script>
jQuery.noConflict();
// Use jQuery via jQuery(...)
jQuery(document).ready(function(){
jQuery("div").hide();
});
// Use Prototype with $(...), etc.
$('someid').hide();
</script>
</head>
<body></body>
</html>
2) Additionally, there's another option. If you want to make sure that
jQuery won't conflict with another library - but you want the benefit
of a short name, you could do something like this:
<html>
<head>
<script src="prototype.js"></script>
<script src="jquery.js"></script>
<script>
var $j = jQuery.noConflict();
// Use jQuery via $j(...)
$j(document).ready(function(){
$j("div").hide();
});
// Use Prototype with $(...), etc.
$('someid').hide();
</script>
</head>
<body></body>
</html>
For more information on the above topic please refer to http://docs.jquery.com/Using_jQuery_with_Other_Libraries