var agt = navigator.userAgent.toLowerCase(); 
if ((agt.indexOf("mac")!=-1)) 
{
	// mac
	var sAlignTable = "<table width='730' border='0' cellpadding='0' cellspacing='0'>";
	var sMenuAlignment = "left";
} 
else
{
	// pc
	var sAlignTable = "<table width='730' border='0' cellpadding='0' cellspacing='0' align='center'>";
	var sMenuAlignment = "center";
}
//alert(sMenuAlignment);
var nFooter = 0;