onbeforeunload event message error in IE?

Question

I use the following event to call when the application will close in Internet Explorer.It was work Fine that means it will call when i close IE browser Tab.And My problem is if I close the window I receive the message from Webpage,I receive the 'False' statement with that message.If I remove the return false statement in this function I didn't access the function.How to hide the False statement from the Msg Box?

window.onbeforeunload = function(event) 
{

           if($.browser.msie)
           {
               alert('Test');
               return false;
            }

 }    

Answer 1

Try this:

window.onbeforeunload = function(event) 
{

           if($.browser.msie)
           {
               alert('Test');
               return "";
            }

 }