function chage(value)
{
if(value=="1")
{
 window.location.href="shtnew/ennew/index.html";
}
if(value=="2")
 window.location.href="index.jsp";

}

function ChangeDiv(divId,divName,divname1) 
{ 
 for(i=1;i<=4;i++)
 {
     document.getElementById(divName+i).style.display="none"; 
 }
 document.getElementById(divName+divId).style.display="block"; 

 for(i=1;i<=4;i++)
 {
     document.getElementById(divname1+i).className="nomor"; 
 }
 document.getElementById(divname1+divId).className="esp"; 

}

function refreshimg(){
	    	
  		var rand = Math.random();
  		//IE7有缓存,为了保证验证不被缓存,加上随机内容的参数
  		document.all.authImg.src="authImg.servlet?r="+rand;
	    		
}