this.screenshotPreview = function(previewLink, width){	
	/*
	 * Url preview script 
	 * powered by jQuery (http://www.jquery.com)
	 * 
	 * written by Alen Grakalic (http://cssglobe.com)
	 * 
	 * for more info visit http://cssglobe.com/post/1695/easiest-tooltip-and-image-preview-using-jquery
	 *
	 */
	
	 /*----- Modified by Linh T. Nguyen (linhburin@yahoo.com) 
	 */
	 
	xOffset = -25;
	yOffset = -180;
		
	$("a."+previewLink).hover(function(e){
		this.t = this.title;
		this.title = "";	
		var c = (this.t != "") ? "<br/>" + this.t : "";
		$("body").append("<p id='"+previewLink+"'><img src='"+ this.rel +"' alt='url preview' width='"+width+"'/>"+ c +"</p>");								 
		$("#"+previewLink)
			.css("top",(e.pageY - xOffset) + "px")
			.css("left",(e.pageX + yOffset) + "px")
			.fadeIn("fast");						
    },
	function(){
		this.title = this.t;	
		$("#"+previewLink).remove();
    });	
	$("a."+previewLink).mousemove(function(e){
		$("#"+previewLink)
			.css("top",(e.pageY - xOffset) + "px")
			.css("left",(e.pageX + yOffset) + "px");
	});			
};