if (parseInt(navigator.appVersion) >= 4) {
	var IE4 = (navigator.appVersion.indexOf("MSIE") > 0);
	var NN4 = (navigator.appName == "Netscape");
	var OS;
	if (IE4 > 0){
		
		var ou=navigator.appVersion.indexOf("MSIE")
		ou+=4;
		var ieVer=navigator.appVersion.substring(ou, (ou+2))
		
		if(ieVer>=6){
			//alert("std");
			document.write ("<link href='"+urlbase+"styles.css' rel='stylesheet' type='text/css' media='screen' />");
		}
		else{
		//alert("ie");
		document.write ("<link href='"+urlbase+"stylesIE.css' rel='stylesheet' type='text/css' media='screen' />");
		}
	 }
	if (NN4 > 0){
	 document.write ("<link href='"+urlbase+"styles.css' rel='stylesheet' type='text/css' media='screen' />");
	}
}