function BeginRequestHandler(sender, args)
                {
                   //   $('div#leftcolumn').block({ message: null });        
                    $.blockUI({ message: '<h4><img src="images/progress-indicator.gif" /><br/> Getting style...</h4>' });        
                }
                function EndRequestHandler(sender, args)
                {                
                    // $('div#leftcolumn').unblock({ fadeOut: 10000 });
                    $.unblockUI();
                }