function bmfw(num,url){
   for(var i=0; i <= 3; i++){
      if(i==num){
	     document.getElementById("a"+i).className="shi";
		 document.getElementById("ul"+i).style.display="block";
	  }else{
	     document.getElementById("a"+i).className="";
		 document.getElementById("ul"+i).style.display="none";
	  }
   }
   document.getElementById("more").innerHTML="<a href='"+url+"/'>¸ü¶à&gt;&gt;</a>";
}