//set global browser identification variables
	browser = navigator.appName;
	browserNum = parseInt(navigator.appVersion);
	N4 = false;
	N6 = false;
	IE = false;
	
	if ((browser == "Netscape") && (browserNum < 5))
	{
		//Netscape 4.x
		N4 = true;
		//alert("N4");
	}
	else if ((browser == "Netscape") && (browserNum >= 5))
	{
		//Netscape 6
		N6 = true;
		//alert("N6");
	}
	else
	{
		//Internet Explorer
		IE = true;
		//alert("IE");
	}