//**************************************************************
// jQZoom allows you to realize a small magnifier window,close
// to the image or images on your web page easily.
//
// jqZoom version 2.0
// Author Doc. Ing. Renzi Marco(www.mind-projects.it)
// First Release on Dec 05 2007
// i'm searching for a job,pick me up!!!
// mail: renzi.mrc@gmail.com
//**************************************************************


(function($){
    $.fn.jqueryzoom=function(options){
        var settings={xzoom:200,yzoom:200,offset:10,position:"right",lens:1,preload:1};
        if(options){$.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}); // position on the image
            $("div.zoomdiv").width(settings.xzoom);
            $("div.zoomdiv").height(settings.yzoom);
            $("div.zoomdiv").show();
            if(!settings.lens){
                $(this).css('cursor','crosshair')
            }
            $(document.body).mousemove(function(e){
                mouse=new MouseEvent(e);
                var bigwidth=$(".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(151.25);
                    $("div.jqZoomPup").height(110);
                    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}