function check(){
	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';
			}
		}
	}
	txt = '<link rel="stylesheet" href="/static/css/'+cssName+'" type="text/css">';
	document.write(txt);
}