// JavaScript Document

var onImage='';

function ImageSwap(imagename) {
	var browser=navigator.appName;
	var b_version=navigator.appVersion;
	var version=parseFloat(b_version);
	if ((browser=="Microsoft Internet Explorer")
	&& (version<7))
	{
		document.getElementById(imagename).src="images/mainnav_bg-over.gif";
	} else {
		document.getElementById(imagename).src="images/mainnav_bg-over.png";
	}
	if (onImage != '') {
		document.getElementById(onImage).src="images/clear1x1.gif";
	}
	onImage=imagename;
}