/*
 * 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
 */
this.imagePreview = function(){	
	/* CONFIG */
		xOffset = 15; //x
		yOffset = 30; //y
	// these 2 variable determine popup's distance from the cursor you might want to adjust to get the right result
		preloadedImages = new Array();
	//array for preloaded images
	var arg = $('.preview');
	for(var i = 0; i<arg.length; i++){
		
		var link = arg[i].href;

		preloadedImages[link] = new Image();
		preloadedImages[link].src = resizeImgLink(link);
		preloadedImages[link].alt = 'Image preview';
	}
		
	$("a.preview").hover(function(e){
		this.t = this.title;
		this.title = "";	
		//var c = (this.t != "") ? "<br/>" + this.t : "";
		//$("body").append("<div id='preview'><img src='"+ this.href +"' alt='Image preview' /><p>"+ c +"</p></div>");								 
		//var link = resizeImgLink(this.href);
		//$("body").append("<div id='preview'><img src='"+ link +"' alt='Image preview' /></div>");			
		$("body").append("<div id='preview'></div>");
		
		ScrollTop = document.body.scrollTop;
		if (ScrollTop == 0)
		{
		    if (window.pageYOffset)
		        ScrollTop = window.pageYOffset;
		    else
		        ScrollTop = (document.body.parentElement) ? document.body.parentElement.scrollTop : 0;
		}		
		rel_position_y = e.pageY - ScrollTop;
		
		if(rel_position_y>300)
			yOffset = -300;
		else
			yOffset = 10;
		
		$("#preview")
			.append(preloadedImages[this.href])
			.css("top",(e.pageY - yOffset) + "px")
			.css("left",(e.pageX + xOffset) + "px")
			.fadeIn();
    },
	function(){
		this.title = this.t;	
		$("#preview").remove();
    });	
	$("a.preview").mousemove(function(e){
		
		ScrollTop = document.body.scrollTop;
		if (ScrollTop == 0)
		{
		    if (window.pageYOffset)
		        ScrollTop = window.pageYOffset;
		    else
		        ScrollTop = (document.body.parentElement) ? document.body.parentElement.scrollTop : 0;
		}		
		rel_position_y = e.pageY - ScrollTop;
		
		if(rel_position_y>300)
			yOffset = -300;
		else
			yOffset = 10;
		
		$("#preview")
			.css("top",(e.pageY + yOffset) + "px")
			.css("left",(e.pageX + xOffset) + "px");
	});
	$("a.preview").click(function(){
		return false;
	});
	
	/*tworzy link do zmniejszonego obrazka*/
	function resizeImgLink(u){
		return u.replace('.jpg','@320.jpg');
	}	
};