var vNum = navigator.appVersion.charAt(0);
var bName = navigator.appName.charAt(0);

var macie = 'mac_ie.css';		//-- MAC IE
var macnn4 = 'mac_nn4.css';		//-- MAC NETSCAPE 4.x
var macnn6 = 'mac_nn6.css';		//-- MAC NETSCAPE 6.x~
var winie = 'win_ie.css';		//-- WIN IE
var winnn4 = 'win_nn4.css';		//-- WIN NETSCAPE 4.x
var winnn6 = 'win_nn6.css';		//-- WIN NETSCAPE 6.x~

if(navigator.appVersion.indexOf("Mac") > -1){
	if( bName == "M"){
		cssName = 'mac_ie.css';
	}else{
		if( vNum < 5 ){
			cssName = 'mac_nn4.css';
	 	}else{
			cssName = 'mac_nn6.css';
	 	}
	}
}else{
	if( bName == "M"){
		cssName = 'win_ie.css';
	}else{
		if( vNum < 5 ){
			cssName = 'win_nn4.css';
		}else{
			cssName = 'win_nn6.css';
		}
	}
}
	document.write('<link rel="stylesheet" href="../css/'+cssName+'" type="text/css">');