//**************************************************************
// 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: 1, //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("src");
            
            $(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
				top: 62,
                left: 315
            });
            
            $("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);
                    
                    
                    
                    
                    $("div.jqZoomPup").width(50);
					//$("div.jqZoomPup").width("128px");
		    		//$("div.jqZoomPup").height((settings.yzoom)/scaley);
					$("div.jqZoomPup").height(50);
                    
                    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 + "'></div>");
            
            $(this).each(function(){
            
                var imagetopreload = $(this).children("img").attr("src");
                
                var content = jQuery('div.jqPreload' + count + '').html();
                
                if(imagetopreload!=undefined) {
                  jQuery('div.jqPreload' + count + '').html(content + '<img src=\"' + imagetopreload + '\">');
                }
                
            });
            
        }
        
    }
    
})(jQuery);

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