// JavaScript Document

function showck(){
if(this.value!=''){
document.getElementById("ck").style.display='block';
}
if(document.getElementById("phone").value==''&&document.getElementById("email").value==''){
document.getElementById("ck").style.display='none';
}
}
function newVCode()
    {
        url="yianzhen.asp?updatetime="+Math.random();
        document.getElementById("ckimg").src=url;
    }