var navs= new Array();
navs["guanyugongxiaotao"] ="nav_1";
navs["chubanwu"] ="nav_29";
navs["zhuanti"] ="nav_16";
navs["blog"] ="nav_3";

window.onload=function(){ 
	var url = location.href;  

	for( key in navs){
		if(url.indexOf(key)>0){		 
			 document.getElementById(navs[key]).className="selected";
		}
	}
}