agt=navigator.userAgent.toLowerCase();
	ie=(document.all) ? true:false
	if(ie){
		ie4=(agt.indexOf('msie 4.')!=-1) ? true:false
		ie5=(agt.indexOf('msie 5.')!=-1) ? true:false
		}
	else { ie4=0;ie5=0;ie6=0; }

	ns=(document.layers) ?  true:false
	ns6=(document.getElementById && !document.all) ? true:false
	
	win=( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) )? true:false
	mac=(agt.indexOf("mac")!=-1)? true:false

document.open();
if(win && ie){
document.write('<link rel="stylesheet" href="common/css/winie.css" type="text/css">\n');
}
else if(win && ns){
document.write('<link rel="stylesheet" href="common/css/winns.css" type="text/css">\n');
}
else if(win && ns6){
document.write('<link rel="stylesheet" href="common/css/winns6.css" type="text/css">\n');
}
else if(mac && ie){
document.write('<link rel="stylesheet" href="common/css/macie.css" type="text/css">\n');
}
else if(mac && ns){
document.write('<link rel="stylesheet" href="common/css/macns.css" type="text/css">\n');
}
else if(mac && ns6){
document.write('<link rel="stylesheet" href="common/css/macns6.css" type="text/css">\n');
}
document.close();