function ProgressBar() {}
    ProgressBar.__class=true;
     ProgressBar.hide = function() {
         $findControl("loading1").hide();
     }
     ProgressBar.show = function() {
         $findControl("loading1").show();
     }
     ProgressBar.init = function() {
       var loading  =new CK.UI.Control.AlwaysVisibleDiv("loading1","div_loading",10,'center','middle',0,0);
       loading.hide();  
     }