var divElem='AlertDiv';var messageElem='AlertMessage';Sys.Application.add_load(ApplicationLoadHandler)
function ApplicationLoadHandler(sender,args)
{Sys.WebForms.PageRequestManager.getInstance().add_initializeRequest(CheckStatus);}
function CheckStatus(sender,args)
{var prm=Sys.WebForms.PageRequestManager.getInstance();if(prm.get_isInAsyncPostBack()&args.get_postBackElement().id=='CancelRefresh'){prm.abortPostBack();}
else if(prm.get_isInAsyncPostBack()&args.get_postBackElement().id=='RefreshButton'){args.set_cancel(true);ActivateAlertDiv('visible','Still working on previous request.');}
else if(!prm.get_isInAsyncPostBack()&args.get_postBackElement().id=='RefreshButton'){ActivateAlertDiv('visible','Retrieving headlines.');}}
function ActivateAlertDiv(visString,msg)
{var adiv=$get(divElem);var aspan=$get(messageElem);adiv.style.visibility=visString;aspan.innerHTML=msg;}
if(typeof(Sys)!=="undefined")Sys.Application.notifyScriptLoaded();