var furl=document.URL;
  //多个用select case
   if(furl.indexOf("ch7w.com")!=-1)
   {
	   document.getElementById("top").innerHTML="<div  align='center'><iframe frameborder='0'  scrolling='no' width='995' height='130' id='info_iframe' name='info_content' onload='change_size()'  src='http://www.ch7w.com/top.html' ></iframe></div>";
	   var nowtitle=document.title;
	   nowtitle=nowtitle.replace("www.xiaoyouxi.com","game.ch7w.com");
	   document.title=nowtitle.replace("小游戏","小游戏|启文网游戏频道");
    } 
  
	//