var intervalHandler;

function fetchMoreIfAtBottom()

   {

   var element = parent.body_frame.document.body;

   if ( element == null )

      {

      return;

      }

    var viewport = parent.pageYOffset;

    var elementHeight = element.offsetHeight;

    var elementOffsetTop = element.offsetTop;

    var screenHeight = screen.availHeight;

    if ( elementOffsetTop + elementHeight - viewport < screenHeight )

       {            

       location.href = "cmail://body/" + viewport

       clearInterval(intervalHandler);

       }

    }

function scrollHandler()

	{	

	  intervalHandler = setInterval( "fetchMoreIfAtBottom()", 500);

	} 

function init(scrollPos)

    {

    collapseHeader();

    window.scrollTo(0, scrollPos);

    //start a scrolling event which will trigger the check of bottom reached...

    //this will take care of short document not does not need scrolling

    scrollHandler();

    } 

//onload=init;