function gopage(page)
                  {
                     
                      window.location.href = geturl(page);
                      
                     
                  }

               function butgopage(max)
               
               
               {

               if(document.getElementById('txtpage').value==''||parseInt(document.getElementById('txtpage').value)>parseInt(max))
               {
                  alert('对不起，页数必须填写而且不要于最大页数');

                   document.getElementById('txtpage').focus();

               }
               else
                {
                gopage(document.getElementById('txtpage').value);
                }


              }

function geturl(page)
{
 var url=location.href;
var patrn=/page=\d+/;

if (patrn.test(url))
{
  url=url.replace(patrn,"page="+page);

}
else
{

 if(location.search=='')
 {
 url=url+"?page="+page;
 }
 else
 {
 url=url+"&page="+page;
 }
  

}

return url;

}







//            if (!Page.ClientScript.IsClientScriptIncludeRegistered(this.GetType(), "goPost"))
//            {
//                Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "goPost", dopost);
//            }