//**************************************************************
// 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.jqzoom = function(options){

		var settings = {
				xzoom: 295,		//zoomed width default width
				yzoom: 200,		//zoomed div default width
				offset: 0,		//zoomed div default offset
				position: "right" ,//zoomed div default position,offset position is to the right of the image
				lens:0, //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.ZweimZoomdiv").get().length == 0){
  		    $(this).after("<div class='ZweimZoomdiv'><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.ZweimZoomdiv").css({ top: imageTop,left: leftpos });
		    $("div.ZweimZoomdiv").width(settings.xzoom);
		    $("div.ZweimZoomdiv").height(settings.yzoom);
        $("div.ZweimZoomdiv").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.ZweimZoomdiv").get(0).scrollTop = scrolly * scaley;
  				scrollx = xpos;
  				$("div.ZweimZoomdiv").get(0).scrollLeft = (scrollx) * scalex ;
        });
		  } ,function(){
          $(this).children("img").attr("alt",noalt);
  	      $(document.body).unbind("mousemove");
  	      if(settings.lens){
            //$("div.jqZoomPup").remove();
  		    }
  		    //$("div.ZweimZoomdiv").remove();
		    });
        count = 0;
      if(settings.preload){
        $('body').append("<div style='display:none;' class='jqPreload"+count+"'>Load Preimage</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;
}