//**************************************************************
// 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: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.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;


}