var NS = navigator.appName.indexOf("N",0) != -1;
var IE = navigator.appName.indexOf("M",0) != -1;
 if(NS){
 document.writeln("<link rel=\"stylesheet\" href=\"../css/ns.css\" type=\"text/css\">");
 }
 else if(IE){
 document.writeln("<link rel=\"stylesheet\" href=\"../css/ie.css\" type=\"text/css\">");
 }