function BrowserCheck() {
			var b = navigator.appName
			if (b=="Netscape") this.b = "ns"
			else if (b=="Microsoft Internet Explorer") this.b = "ie"
			else this.b = b
			this.v = parseInt(navigator.appVersion)
			this.ns = (this.b=="ns" && this.v>=4)
			this.ns4 = (this.b=="ns" && this.v==4)
			this.ns5 = (this.b=="ns" && this.v==5)
			this.ie = (this.b=="ie" && this.v>=4)
			this.ie4 = (navigator.userAgent.indexOf('MSIE 4')>0)
			this.ie5 = (navigator.userAgent.indexOf('MSIE 5')>0)
			if (this.ie5) this.v = 5
			this.min = (this.ns||this.ie)
		}

		function getElement(strElementName) {
			return  Netscape4? this.document.layers[strElementName] :
			IExplorer? document.all[strElementName] :
			document.getElementById(strElementName);
		}

		function getElementStyle(strElementName) {
			return Netscape4? getElement(strElementName) : getElement(strElementName).style;
		}

		function changeElementVisibility(strElementName, fVisible) {
			var elCSS = getElementStyle(strElementName);
			if (fVisible) elCSS.visibility = 'visible';
			else elCSS.visibility = 'hidden';
		}

		function showMenue(DivID) {
			// adjust number to reflect number of mainnav items
			for(i = 0; i < 5; i++) {
				if(DivID == i) {
					changeElementVisibility("subnav"+i, true);
				} else {
					changeElementVisibility("subnav"+i, false);
				}
			}
			//reset click box
			window.focus();
		}

		// automatically create the "is" object
		var is = new BrowserCheck();
		var selectedimgName="";
		var selectedimgObj="";

		var userAgent = navigator.userAgent.toLowerCase();
		var Netscape4 = document.layers;
		//var IExplorer = (document.all && userAgent.indexOf('mac')<0);
		var IExplorer = (document.all);
		var IExplorerMac = (document.all && userAgent.indexOf('mac')>0);
		var w3c = document.documentElement;
		var dhtml = ((Netscape4 || IExplorer || w3c) &&  userAgent.indexOf('aol')<0);