// get browser: Internet Explorer or other
	var isExplorer = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
	var isNav6 =  (!isExplorer) && (navigator.appVersion.charAt(0) > "4")
	
// get platform: Mac or other
	if (top.navigator.platform != null)	{
		// get browser platform
		this.platform =	navigator.platform;
	} else {
		// get platform	for browsers that don't support navigator.platform
		var startindex = navigator.appVersion.indexOf("(") + 1;
		var endindex = navigator.appVersion.indexOf(";");
		this.platform =	navigator.appVersion.substring(startindex,endindex);
	}
	var isMac = (this.platform.indexOf("Mac") != -1) ? true : false;
	var isWindows = (navigator.appVersion.indexOf("Windows") != -1) ? true : false;

// select stylesheets based on browser and platform
	if (isMac) {
		if (isExplorer) {
			document.write ("<LINK REL='stylesheet' HREF='css/scroller.css' TYPE='text/css'>");
		} else {
			document.write ("<LINK REL='stylesheet' HREF='css/scroller_ns.css' TYPE='text/css'>");
		}
	} else {
		if (isExplorer) {
			document.write ("<LINK REL='stylesheet' HREF='css/scroller.css' TYPE='text/css'>");
		} else { 
			document.write ("<LINK REL='stylesheet' HREF='css/scroller_ns.css' TYPE='text/css'>");
		}
	}
	
function selecturl(s) {
	var gourl = s.options[s.selectedIndex].value;
	window.location.href = gourl;
	
}	

function autocover(tt){
if(!tt)window.open(event.srcElement.options[event.srcElement.selectedIndex].value,"48","width=600,height=400,scrollbars=no,resizable=no,status=no");
else window.open(tt.options[tt.selectedIndex].value,"48","width=600,height=400,scrollbars=no,resizable=no,status=no");
}