var thumb = null;
function showThumbnail(which,e)
	{
	thumb = document.getElementById('thumb');
	if( thumb && thumb.style.visibility == 'hidden' )
		{
		thumb.style.left = e.pageX ? pageXOffset + e.clientX + 20 : document.body.scrollLeft + e.x + 20;
		thumb.style.top = e.pageY ? pageYOffset + e.clientY + 10 : document.body.scrollTop  + e.y;
		thumb.style.visibility = 'visible';
		thumb.innerHTML = '<img src="' + which + '">';
		}
	}
function closeThumbnail()
	{
	if( thumb )
	thumb.style.visibility = 'hidden';
	}