[jQuery] Jquey Block UI is not working in IE 6

[Java Books]

Hi All,
         We are usung Jquery Block UI it is working fine in firefox
but not in IE, We are displaying Pop-up before the User deletes a row
(Confirmation popup) if the user clicks OK , we need unblock it not
working IE.

Here is the code

function delete(){
      jQuery.blockUI({
        message: $('#deleteMessage'),
        css: {
                height: '200px',
                width: '600px'
         }
         });
       }

  function removePopUp(){
           jQuery.unblockUI();
                return false;

             }