var mac = navigator.appVersion.indexOf("Mac")>-1
var opera = navigator.userAgent.indexOf("Opera")>-1

if (navigator.appName == "Netscape" && !mac)
{
	document.write('<link rel="StyleSheet" href="images/thumb_img/main_ns_01.css" type="text/css">');
} 
else
{
	document.write('<link rel="StyleSheet" href="images/thumb_img/main_01.css" type="text/css">');
}

function helpWindow(wDoc) 
{
	hWin = window.open(wDoc, "HelpWin", "resizable,menubar,scrollbars,top=20,left=20,width=400,height=300");
}