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 : document.body.scrollTop  + e.y;
				thumb.style.visibility = 'visible';
				thumb.innerHTML        = '<img src="' + which + '">';
			}
		}
		function closeThumbnail()
		{
			if( thumb )
			thumb.style.visibility = 'hidden';
		}