//**************************************************************
// 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
            disbale: false,
            cursor: 'cross',
            position: "right"  //zoomed div default position,offset position is to the right of the image
        };

        if(options) {
            $.extend(settings, options);
        }
        if(settings.disable == true){
            $(this).unbind('mouseenter mouseleave');
            $(this).css("cursor","default");
            return false;
        }
        var noalt ='';
        $(this).css("cursor","crosshair");
        $(this).hover(function(){


            var imageLeft = $(this).offset().left;
            var imageRight = $(this).get(0).offsetRight;
            var imageTop =  $(this).offset().top;
            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>");

            }
            else{
                $('.bigimg').attr("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(1);
            $("div.zoomdiv").height(1);


                    

            $("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);
                var offsX;

                if(mouse.x - imageLeft > imageWidth/2){
                    $("div.zoomdiv").css("left",'1%');
                    offsX = 35;
                }else{
                    $("div.zoomdiv").css("left",'51%');
                    offsX = 15;
                                            
                }
                $("div.zoomdiv").width(settings.xzoom);

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

                scrolly = (mouse.y - imageTop) - ($("div.zoomdiv").height()*1/scaley)/2 ;
                scrolly = scrolly -10;


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

                scrollx =    mouse.x - imageLeft - ($("div.zoomdiv").width()*1/scalex)/2 ;
                scrollx = scrollx - offsX;
                $("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex ;


            });
        },function(){
            if (navigator.appName.indexOf("Microsoft") != -1) {
                $(this).attr("alt",noalt);
                $("div.zoomdiv").hide();
            }else{
                $(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
}