var bv = navigator.appVersion.substring(0,1);
var mac = false;
var nc4 = false;
var ie4 = false;
var nc6 = false;
var nc4 = (document.layers)? true:false;
var ie4 = (document.all)? true:false;
var nc6 = (document.getElementById)? true:false;

if (ie4){
	nc6=false;
}
if(navigator.userAgent.indexOf('Mac') != -1) {
	if(nc6){
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="css/mnc6.css">');
		ie4=null;
	}
	if(nc4){
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="css/mnc4.css">');
		document.close();
	}
	if(ie4){
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="css/mie4.css">');
	}	
}else {
	if(nc6){		
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="css/wnc6.css">');
		ie4=null;
	}
	if(nc4){
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="css/wnc4.css">');
	}
	if(ie4){	
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="css/wie4.css">');
	}
}