//**************************************************************
// 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).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").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).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;
}