function Preload(sUrl)
{
  var eImage;
  eImage = new Image();
  eImage.src = sUrl;
}

function ScrollTop( iScrollHeight, iAlreadyScrolled ) {
	var iScrollPos;
	if( typeof window.pageYOffset != 'undefined' ) {
	   iScrollPos = window.pageYOffset;
	}
	else if( typeof document.compatMode != 'undefined' && document.compatMode != 'BackCompat' ) {
	   iScrollPos = document.documentElement.scrollTop;
	}
	else if( typeof document.body != 'undefined' ) {
	   iScrollPos = document.body.scrollTop;
	}
	if( ! iAlreadyScrolled ){
		iScrollHeight = 1;
		iAlreadyScrolled = 0;
	} else {
		if( iAlreadyScrolled > iScrollPos + iScrollHeight ){
			iScrollHeight--;
		} else {
			iScrollHeight++;
		}
	}
	if( iScrollPos > 0 ) {
		window.scrollBy( 0, -iScrollHeight );
		iAlreadyScrolled += iScrollHeight;
		setTimeout( "ScrollTop( "+iScrollHeight+", "+iAlreadyScrolled+" )", 10 );
	}
}