18 	

    18 

    19 onload=collapseHeader;

    19 var intervalHandler;

    20 function fetchMoreIfAtBottom()

    21    {

    22    var element = parent.body_frame.document.body;

    23 

    24    if ( element == null )

    25       {

    26       return;

    27       }

    28     

    29     var viewport = parent.pageYOffset;

    30     var elementHeight = element.offsetHeight;

    31     var elementOffsetTop = element.offsetTop;

    32     var screenHeight = screen.availHeight;

    33     if ( elementOffsetTop + elementHeight - viewport < screenHeight )

    34        {            

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

    36        clearInterval(intervalHandler);

    37        }

    38     }

    39 	   

    40 function scrollHandler()

    41 	{	

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

    43 	} 

    44 				

    45 function init(scrollPos)

    46     {

    47     collapseHeader();

    48     window.scrollTo(0, scrollPos);

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

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

    51     scrollHandler();

    52     } 

    53 

    54 //onload=init;