//**************************************************************
// 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(){


      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",'');


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

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

      }

      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(settings.xzoom);

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

      $("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);

        }

     mouse = new MouseEvent(e);



     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 ;


        });
      },function(){
                   $(this).attr("alt",noalt);
         $("div.zoomdiv").hide();
         $(document.body).unbind("mousemove");
         $(".lenszoom").remove();
         $("div.zoomdiv").remove();
      });

  }

})(jQuery);

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