/*
 * Image 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
 *
 */

/*
* Script modified for increased functionality by Tom Bates (http://wwww.sitdap.com)
*
*
*/
 
this.imagePreview = function(){	
	/* CONFIG */
		
		xOffset = -20;
		yOffset = -100;
		
		// these 2 variable determine popup's distance from the cursor
		// you might want to adjust to get the right result
		
	/* END CONFIG */
	

	
	$("a.preview").hover(function(e){
		above = false;
		this.t = this.title;
		this.title = "";	
		var c = (this.t != "") ? "<br/>" + this.t : "";

		$("body").append("<p id='preview'><img src='"+ this.href +"' alt='Image preview' />"+ c +"</p>");								 
		$("#preview")
			.css("top",(e.pageY - xOffset) + "px")
			.css("left",(e.pageX + yOffset) + "px")
			.fadeIn("fast", function(){
				if($('#preview').css('opacity') == 1) {
					tipBottom = $('#preview').offset().top + $('#preview').height();
					windowBottom = $(window).height() + $(window).scrollTop();
					if(tipBottom > windowBottom) { 
						$('#preview').css('top', (e.pageY - $('#preview').height() - 40) + 'px');
						above = true;
					}
				}
			});
						
    },
	function(){
		this.title = this.t;	
		$("#preview").remove();
    });	
	$("a.preview").mousemove(function(e){
		if(above) {
			$("#preview").css({ top: (e.pageY - $('#preview').height() - 40) + "px", left: (e.pageX + yOffset) + "px"});
		} else {
			$("#preview").css({ top: (e.pageY - xOffset) + "px", left: (e.pageX + yOffset) + "px"});
		}
	});			
};


// starting the script on page load
$(document).ready(function(){
	imagePreview();
});