Mega Code Archive
OnSelectionChange Example
<![CDATA[
<head>
<script language="JavaScript" for=document event=onselectionchange>
alert('The selection has changed');
</script>
</head>
<body>
<p>Copy some text into the textarea</p>
<form>
<textarea cols=30 contenteditable=true>Click here</textarea>
</form>
</body>
]]>