//**************************************************************
// jQZoom allows you to realize a small magnifier window,close
// to the image or images on your web page easily.
//
// jqZoom version 1.2
// Author Doc. Ing. Renzi Marco(www.mind-projects.it)
// Released on Dec 05 2007
// i'm searching 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
			};

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

            var noalt ='';

		$(this).hover(function(){

			$("div.zoomdiv").css({"overflow": "hidden"});
           
		    var imageLeft = $(this).get(0).offsetLeft;
		    var imageRight = $(this).get(0).offsetRight;
		    var imageTop =  $(this).get(0).offsetTop;
		    var imageWidth = $(this).get(0).offsetWidth;
		    var imageHeight = $(this).get(0).offsetHeight;

		    var bigimage = $(this).attr("alt");
                noalt = $(this).attr("alt");
                $(this).attr("alt",'');
                		  
			$("div.zoomdiv").html("<img class='bigimg' src='"+bigimage+"'/>");

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

		    leftpos = imageLeft + imageWidth + settings.offset;

		    }else{

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

		    }

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

		   // $("div.zoomdiv").width(298);

		   // $("div.zoomdiv").height(298);

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


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

				    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 = Math.round(bigwidth/imageWidth) ;

				    var scaley = Math.round(bigheight/imageHeight);

				    }
					//alert("bigwidth:" + bigwidth  + " imageWidth:" + imageWidth + " bigheight:" + bigheight+ " imageHeight:" + imageHeight)
					mouse = new MouseEvent(e);


					//alert("scalex:" + scalex  + " scaley:" + scaley )
					scrolly = mouse.y - imageTop - ($("div.zoomdiv").height()*1/scaley)/2 ;

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

				    scrollx =    mouse.x - imageLeft - ($("div.zoomdiv").width()*1/scalex)/2 ;

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

					//alert("scrolly:" + scrolly  + " scrollx:" + scrollx + " scaley:" + scrolly * scaley + " scalex:" + (scrollx) * scalex)
				    });
		    },function(){
                   $(this).attr("alt",noalt);
		      // $("div.zoomdiv").hide();
		       $(document.body).unbind("mousemove");
		       $(".lenszoom").remove();
			   $("div.zoomdiv").css({"overflow": ""});
		       //$("div.zoomdiv").remove();
			   //$("div.zoomdiv").html('<img src="'+big_image_source+'">');
		    });

		}

})(jQuery);

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