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 {
		 if (ns6 && !ie4) {
	  		 document.write("<LINK REL=stylesheet HREF=\"styles_NNew.css\" TYPE=\"text/css\">");
	   	 } else {
	  		 document.write("<LINK REL=stylesheet HREF=\"styles.css\" TYPE=\"text/css\">");
	   	 }
	}
}

style_load();