//if (document.all) document.styleSheets[0].href="css/iecss.css";

if (navigator.userAgent.indexOf("Win")>-1){ 
	var oper=navigator.userAgent.indexOf("Opera");
	if(oper>-1) {
		document.write('<link href="css/opcss.css" rel="stylesheet" type="text/css">')
	}else{
		document.write('<link href="css/mcss.css" rel="stylesheet" type="text/css">')
	}
}else{
	var saf=navigator.userAgent.indexOf("Safari");
	if(saf>-1){
		document.write('<link href="css/maccss2.css" rel="stylesheet" type="text/css">')
	}else{
		var net=navigator.userAgent.indexOf("Netscape");
		if(net>-1){
			document.write('<link href="css/maccss2.css" rel="stylesheet" type="text/css">')
		}else{
			document.write('<link href="css/maccss1.css" rel="stylesheet" type="text/css">')
		}
	}
}