/*
 * 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 = 10;
		yOffset = 30;
		
		// 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){
		this.t = this.title;
		this.title = "";	
		var c = (this.t != "") ? "<br/>" + this.t : "";
		$("body").append("<p id='preview'><img src='"+ getImageSource(this.href) +"' alt='Image preview' id='bigimage' />"+ c +"</p>");	
		//calcualte what half of the screen we are on
		if(((document.body.offsetWidth/2) < e.pageX) && document.getElementById('bigimage').width > 0) //display to the right
		{
		    yOffset = -(document.getElementById('bigimage').width) - 30; 
		}
		else //display to the left
		{
		    yOffset = 30;
		}
		//alert(document.body.offsetHeight);
		//alert(e.pageY);
		//alert(document.documentElement.scrollTop);
		if(((document.documentElement.scrollTop + (screen.height/2)) > e.pageY) && document.getElementById('bigimage').height > 0) //display to the top
		{
		   
			xOffset = 10;
		}
		else //display to teh bottom
		{
		     xOffset = (document.getElementById('bigimage').height) + 10;
		}
							 
		$("#preview")
			.css("top",(e.pageY - xOffset) + "px")
			.css("left",(e.pageX + yOffset) + "px")
			.fadeIn("fast");	
	    //alert(e.pageY + 'y');	
	    //alert(e.pageX + 'x');	
	    //alert(screen.width);
	   // alert(document.getElementById('bigimage').width);	
	    			
    },
	function(){
		this.title = this.t;	
		$("#preview").remove();
    });	
	$("a.preview").mousemove(function(e){
		$("#preview")
			.css("top",(e.pageY - xOffset) + "px")
			.css("left",(e.pageX + yOffset) + "px");
	});			
};


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