//**************************************************************
// 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,		//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  or static
		preload: 1,
        offsetTop: 0
	};

	if(options) {
		$.extend(settings, options);
	}

	var noalt='';

    $(this).hover(
        function(){

		    var imageLeft = this.offsetLeft;
		    var imageRight = this.offsetRight;
		    var imageTop =  $(this).get(0).offsetTop  ;
		    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'><!--[if lte IE 6.5]><iframe ></iframe><![endif]--><img class='bigimg' src='"+bigimage+"'/></div>");
    //		    $(this).after("<div class='zoomdiv'><img class='bigimg' src='"+bigimage+"'/></div>");
		        $(this).append("<div class='jqZoomPup'>&nbsp;</div>");
		    }

		    if(settings.position == "right"){
		        leftpos = imageLeft + imageWidth + settings.offset;
		    }else if(settings.position == "static") {
                leftpos = settings.offset;
            }else{
                leftpos = imageLeft - settings.xzoom - settings.offset;
		    }

		    $("div.zoomdiv").css({ top: imageTop + settings.offsetTop ,left: leftpos });
		    $("div.zoomdiv").width(settings.xzoom);
		    $("div.zoomdiv").height(settings.yzoom);
            $("div.zoomdiv").show();

            $(document.body).mousemove(function(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);
                    $('div.jqZoomPup').show();
                    $("div.jqZoomPup").css('visibility','visible');
                }
                
                mouse = new MouseEvent(e);
                xpos = mouse.x - $("div.jqZoomPup").width()/2 - imageLeft;
                ypos = mouse.y - $("div.jqZoomPup").height()/2 - imageTop ;
                
                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;
                
                $("div.jqZoomPup").css({ top: ypos,left: xpos });
                $("div.jqZoomPup").show();
               //     scrolly = mouse.y - imageTop - ($("div.zoomdiv").height()*1/scaley)/2 ;
                scrolly = ypos;
				$("div.zoomdiv").get(0).scrollTop = scrolly * scaley;
				scrollx = xpos;
			    //scrollx =    mouse.x - imageLeft - ($("div.zoomdiv").width()*1/scalex)/2 ;
				$("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex ;
			});
		},
        function(){
            $(this).children("img").attr("alt",noalt);
		    $(document.body).unbind("mousemove");
		    $("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
}