function rolloverSubmenu() {
if (!document.getElementsByTagName) return false;
if (!document.getElementById) return false;

var nav = document.getElementById("globalNav");
var images = nav.getElementsByTagName("img");
var ver = getInternetExplorerVersion();

for(var i=0; i < images.length; i++) {
//	if((!images[i].getAttribute("src").match("_off.")) && (!images[i].style.filter.match("_off."))) continue;
	images[i].onmouseover = function() {
		this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
		if ((ver > -1) && (ver < 7.0)) {
			fltr = this.style.filter.replace("_off.", "_on.");
			this.style.filter = fltr;
		}
	}
	images[i].onmouseout = function() {
		this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
		if ((ver > -1) && (ver < 7.0)) {
			fltr = this.style.filter.replace("_on.", "_off.");
			this.style.filter = fltr;
		}
	}
}
}

function getInternetExplorerVersion()
// Returns the version of Internet Explorer or a -1
// (indicating the use of another browser)
{
 var rv = -1; // Return value assumes failure
 if (navigator.appName == 'Microsoft Internet Explorer')
 {
  var ua = navigator.userAgent;
  var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
  if (re.exec(ua) != null)
   rv = parseFloat( RegExp.$1 );
 }
 return rv;
}

if(window.addEventListener) {
	window.addEventListener("load", rolloverSubmenu, false);
} else if(window.attachEvent) {
	window.attachEvent("onload", rolloverSubmenu);
}