//**************************************************************
// jQZoom allows you to realize a small magnifier window,close
// to the image or images on your web page easily.
//
// jqZoom version 2.2
// Author Doc. Ing. Renzi Marco(www.mind-projects.it)
// First Release on Dec 05 2007
// i'm looking for a job,pick me up!!!
// mail: renzi.mrc@gmail.com
//**************************************************************

(function($){

	$.fn.jqueryzoom = function(options){

		var settings = {
			xzoom: 200,		//zoomed width default width
			yzoom: 200,		//zoomed div default width
			offset: 10,		//zoomed div default offset
			position: "right" ,//zoomed div default position,offset position is to the right of the image
			lens:1, //zooming lens over the image,by default is 1;
			preload: 1

		};

		if(options) {
			$.extend(settings, options);
		}

		var noalt='';

		$(this).click(function(){
		//$(this).hover(function(){

			var imageLeft = $(this).offset().left;                
			var imageTop = $(this).offset().top;


			var imageWidth = $(this).children('img').get(0).offsetWidth;
			var imageHeight = $(this).children('img').get(0).offsetHeight;


			noalt= $(this).children("img").attr("alt");

			var bigimage = $(this).children("img").attr("jqimg");

			$(this).children("img").attr("alt",'');

			if($("div.zoomdiv").get().length == 0){

				$(this).after("<div class='zoomdiv'><img class='bigimg' src='"+bigimage+"'/></div>");


				$(this).append("<div class='jqZoomPup'>&nbsp;</div>");

			}


			if(settings.position == "right"){

				if(imageLeft + imageWidth + settings.offset + settings.xzoom > screen.width){

					leftpos = imageLeft  - settings.offset - settings.xzoom;

				}else{

					leftpos = imageLeft + imageWidth + settings.offset;
				}
			}else{
				leftpos = imageLeft - settings.xzoom - settings.offset;
				if(leftpos < 0){

					leftpos = imageLeft + imageWidth  + settings.offset;

				}

			}

			//$("div.zoomdiv").css({ top: imageTop,left: leftpos });
			$("div.zoomdiv").css({ top: 0,left: 390 });

			$("div.zoomdiv").width(settings.xzoom);

			$("div.zoomdiv").height(settings.yzoom);

			$("div.zoomdiv").show();

			if(!settings.lens){
				$(this).css('cursor','crosshair');
			}




			$(document.body).mousemove(function(e){



				mouse = new MouseEvent(e);

				/*$("div.jqZoomPup").hide();*/


				var bigwidth = $(".bigimg").get(0).offsetWidth;

				var bigheight = $(".bigimg").get(0).offsetHeight;

				var scaley ='x';

				var scalex= 'y';


				if(isNaN(scalex)|isNaN(scaley)){

					var scalex = (bigwidth/imageWidth);

					var scaley = (bigheight/imageHeight);




					$("div.jqZoomPup").width((settings.xzoom)/scalex );

					$("div.jqZoomPup").height((settings.yzoom)/scaley);

					if(settings.lens){
						$("div.jqZoomPup").css('visibility','visible');
					}

				}



				xpos = mouse.x - $("div.jqZoomPup").width()/2 - imageLeft;

				ypos = mouse.y - $("div.jqZoomPup").height()/2 - imageTop ;

				if(settings.lens){

					xpos = (mouse.x - $("div.jqZoomPup").width()/2 < imageLeft ) ? 0 : (mouse.x + $("div.jqZoomPup").width()/2 > imageWidth + imageLeft ) ?  (imageWidth -$("div.jqZoomPup").width() -2)  : xpos;

					ypos = (mouse.y - $("div.jqZoomPup").height()/2 < imageTop ) ? 0 : (mouse.y + $("div.jqZoomPup").height()/2  > imageHeight + imageTop ) ?  (imageHeight - $("div.jqZoomPup").height() -2 ) : ypos;

				}


				if(settings.lens){

					$("div.jqZoomPup").css({ top: ypos,left: xpos });

				}



				scrolly = ypos;

				$("div.zoomdiv").get(0).scrollTop = scrolly * scaley;

				scrollx = xpos;

				$("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex ;


			});
		//},function(){
		});

		$(this).mouseout(function(){

			$(this).children("img").attr("alt",noalt);
			$(document.body).unbind("mousemove");
			if(settings.lens){
				$("div.jqZoomPup").remove();
			}
			$("div.zoomdiv").remove();

		});

		count = 0;

		if(settings.preload){

			$('body').append("<div style='display:none;' class='jqPreload"+count+"'>sdsdssdsd</div>");

			$(this).each(function(){

				var imagetopreload= $(this).children("img").attr("jqimg");

				var content = jQuery('div.jqPreload'+count+'').html();

				jQuery('div.jqPreload'+count+'').html(content+'<img src=\"'+imagetopreload+'\">');

			});

		}

	}

})(jQuery);

function MouseEvent(e) {
	this.x = e.pageX;
	this.y = e.pageY;
}