nav = navigator.appVersion
if(nav.indexOf("Mac",1) != -1)
{
	if (nav.indexOf("MSIE",1)!=-1 && nav.indexOf("5.0",1)!=-1)
		{
			document.write("<link rel='stylesheet' type='text/css' href='scd-pc.css'>");
		}
	else
		{
		document.write("<link rel='stylesheet' type='text/css' href='scd-mac.css'>");
		}
} else {
	document.write("<link rel='stylesheet' type='text/css' href='scd-pc.css'>");
}