function chkSaveInfo(obj)
    {
      if(obj.checked==true)
      {
        document.getElementById("txtExpires").value=43200;
      }
      else
      {
        document.getElementById("txtExpires").value=-1;
      }
    }
    
    function focusLogin()
    {
     var tName=document.getElementById("Text1").value;
     var tPassword= document.getElementById("Text2").value;
     var tCode= document.getElementById("Text3").value;
     if(tName.length==0)
     {
       alert("请输入用户名!");
       document.getElementById("Text1").focus();
       return false;
     }
     if(tPassword.length==0)
     {
     alert("请输入密码!");
     document.getElementById("Text2").focus();
     return false;
     }
     if(tCode.length==0)
     {
     alert("请输入验证码");
     document.getElementById("Text3").focus();
     return false;
     }
    }
    
    function document.onkeypress(){
        if(event.keyCode==13)
        {
            document.getElementById("imgLend").click();   
            return false;                               
        }
    }