function checkinfopage(page,classid)
{
  if (document.getElementById("page").value=="")
     {
       alert('请输入页码!');
       document.getElementById("page").focus();
       return true;
     }
     else
     {
        window.location=page+"?page="+document.getElementById("page").value+"&classid="+classid;
     }
}

function checkinfopage1(page,url)
{
  if (document.getElementById("page").value=="")
     {
       alert('请输入页码!');
       document.getElementById("page").focus();
       return true;
     }
     else
     {
        window.location=page+"?page="+document.getElementById("page").value+"&"+url;
     }
}

function doZoom(size){ 
document.getElementById('zoom').style.fontSize=size+'px'
} 

function showcode(o){
 //重载验证码
  var timenow = new Date().getTime();
 o.src="/include/ValidateCode.aspx?d="+timenow;
}