if(ns4) {
	document.write('<link rel="stylesheet" type="text/css" href="includes/styles_ns4.css">\n');
	}
if(ns6) {
 document.write('<link rel="stylesheet" type="text/css" href="includes/styles_ns6.css">\n');
	}
else {
	document.write('<link rel="stylesheet" type="text/css" href="includes/styles.css">\n');
	}