if (navigator.appVersion.indexOf("Mac") != -1) {
		if (document.all||document.getElementById) cstyle="mac_ie.css";
		if (document.layers) cstyle="mac_ns.css";
	} else {
		if (document.all||document.getElementById) cstyle="pc_ie.css";
		if (document.layers) cstyle="pc_ns.css";
	}
	document.write('<LINK REL=stylesheet TYPE="text/css" HREF="'+cstyle+'">');