ns4 = (document.layers)? true:false
	ns6 = (document.getElementsByName)? true:false
	ie4 = (document.all)? true:false

function style_load() {
	 if (ns4) {
  		 document.write("<LINK REL=stylesheet HREF=\"styles_NN.css\" TYPE=\"text/css\">");
   	 } else {
  		 document.write("<LINK REL=stylesheet HREF=\"styles.css\" TYPE=\"text/css\">");
   	 }
}

style_load();