Mega Code Archive
AllowTransparency Example
<![CDATA[
<html>
<head>
<script>
function function1() {
document.all.frame1.allowTransparency = "false";
document.all.frame1.style.backgroundColor = "white";
document.all.frame2.allowTransparency = "true";
document.all.frame2.style.backgroundColor = "lightgreen";
}
</script>
</head>
<body onLoad="function1();">
<iframe id="frame1" src="http://www.rntsoft.com" allowTransparency="true" style="width:200;">
</iframe>
<iframe id="frame2" src="http://www.rntsoft.com" style="width:200;">
</iframe>
</body>
</html>
]]>