(function($){
$.fn.fancyZoom = function(options){

	var options   = options || {};
	var directory = options && options.directory ? options.directory : 'images';
	var zooming   = false;
	var content_div = "";

  if ($('#zoom').length == 0) {
    var ext = $.browser.msie ? 'gif' : 'png';
    var html = '<div id="zoom" style="display:none;"> \
                  <table id="zoom_table" style="border-collapse:collapse; width:100%; height:100%;"> \
                    <tbody> \
                      <tr> \
                        <td class="tl" style="background:url(' + directory + '/tl.' + ext + ') 0 0 no-repeat; width:20px; height:20px; overflow:hidden;" /> \
                        <td class="tm" style="background:url(' + directory + '/tm.' + ext + ') 0 0 repeat-x; height:20px; overflow:hidden;" /> \
                        <td class="tr" style="background:url(' + directory + '/tr.' + ext + ') 100% 0 no-repeat; width:20px; height:20px; overflow:hidden;" /> \
                      </tr> \
                      <tr> \
                        <td class="ml" style="background:url(' + directory + '/ml.' + ext + ') 0 0 repeat-y; width:20px; overflow:hidden;" /> \
                        <td class="mm" style="background:#fff; vertical-align:top; padding:10px;"> \
                          <div id="zoom_content"></div> \
                        </td> \
                        <td class="mr" style="background:url(' + directory + '/mr.' + ext + ') 100% 0 repeat-y;  width:20px; overflow:hidden;" /> \
                      </tr> \
                      <tr> \
                        <td class="bl" style="background:url(' + directory + '/bl.' + ext + ') 0 100% no-repeat; width:20px; height:20px; overflow:hidden;" /> \
                        <td class="bm" style="background:url(' + directory + '/bm.' + ext + ') 0 100% repeat-x; height:20px; overflow:hidden;" /> \
                        <td class="br" style="background:url(' + directory + '/br.' + ext + ') 100% 100% no-repeat; width:20px; height:20px; overflow:hidden;" /> \
                      </tr> \
                    </tbody> \
                  </table> \
                  <a href="#" title="Close" id="zoom_close" style="position:absolute; top:0; left:0;"> \
                    <img src="' + directory + '/closebox.' + ext + '" alt="Close" style="border:none; margin:0; padding:0;" /> \
                  </a> \
                </div>';

    $('body').append(html);

    $('html').click(function(e){if($(e.target).parents('#zoom:visible').length == 0) hide();});
    $(document).keyup(function(event){
        if (event.keyCode == 27 && $('#zoom:visible').length > 0) hide();
    });

    $('#zoom_close').click(hide);
  }

	var zoom          = $('#zoom');
	var zoom_table    = $('#zoom_table');
	var zoom_close    = $('#zoom_close');
	var zoom_content  = $('#zoom_content');
	var middle_row    = $('td.ml,td.mm,td.mr');

	this.each(function(i) {
		$($(this).attr('class')).hide();
		$(this).click(show);
	});

	return this;

function show(e) {
    if (zooming) return false;
		zooming         = true;
	content_div = $($(this).attr('class'));
	var zoom_width  = options.width;
	var zoom_height = options.height;
	
	var width       = window.innerWidth || (window.document.documentElement.clientWidth || window.document.body.clientWidth);
	var height      = window.innerHeight || (window.document.documentElement.clientHeight || window.document.body.clientHeight);
	var x           = window.pageXOffset || (window.document.documentElement.scrollLeft || window.document.body.scrollLeft);
	var y           = window.pageYOffset || (window.document.documentElement.scrollTop || window.document.body.scrollTop);
	var window_size = {'width':width, 'height':height, 'x':x, 'y':y}
	
	var width		= (zoom_width || content_div.width()) + 60;
	var height		= (zoom_height || content_div.height()) + 60;
	var d			= window_size;
	
	// ensure that newTop is at least 0 so it doesn't hide close button
	var newTop		= Math.max((d.height/2) - (height/2) + y, 0);
	var newLeft		= (d.width/2) - (width/2);
	var curTop		= e.pageY;
	var curLeft		= e.pageX;
	
	zoom_close.attr('curTop', curTop);
	zoom_close.attr('curLeft', curLeft);
	zoom_close.attr('scaleImg', options.scaleImg ? 'true' : 'false');

    $('#zoom').hide().css({
		position	: 'absolute',
		zIndex		: '999',
		top			: curTop + 'px',
		left		: curLeft + 'px',
		width		: '1px',
		height		: '1px'
	});

	fixBackgroundsForIE();
	zoom_close.hide();
	
	if (options.closeOnClick) {
	  $('#zoom').click(hide);
	}
	
	if (options.scaleImg) {
		zoom_content.html(content_div.html());
		$('#zoom_content img').css('width', '100%');
	} else {
		zoom_content.html('');
	}

	$('#zoom').animate({
		top     : newTop + 'px',
		left    : newLeft + 'px',
		opacity : "show",
		width   : width,
		height  : height
	}, 500, null, function() {
		if (options.scaleImg != true) {
			if ($.browser.msie){
				zoom_content.html('<img src="images/blank.gif" width="'+(width-60)+'" height="'+(height-60)+'" border="0" />');
				content_div.css({
					position	: 'absolute',
					zIndex		: '9999',
					top			: $('#zoom_content').offset().top + 'px',
					left		: $('#zoom_content').offset().left + 'px',
					width		: $('#zoom_content').innerWidth() + 'px',
					height		: $('#zoom_content').innerHeight() + 'px',
					display		: 'block'
				});
			} else {
				zoom_content.html(content_div.html());
			};
		}
		unfixBackgroundsForIE();
		zoom_close.show();
		zooming = false;
	});
	return false;
  }

	function hide() {
		if (zooming) return false;
		zooming = true;
		$('#zoom').unbind('click');
		fixBackgroundsForIE();
		if (zoom_close.attr('scaleImg') != 'true') {
			zoom_content.html('');
			if(content_div) content_div.css({'position':'relative','display':'none'}).html('');
		};
		zoom_close.hide();
		$('#zoom').animate({
			top     : zoom_close.attr('curTop') + 'px',
			left    : zoom_close.attr('curLeft') + 'px',
			opacity : "hide",
			width   : '1px',
			height  : '1px'
		}, 500, null, function() {
			if (zoom_close.attr('scaleImg') == 'true') {
				zoom_content.html('');
			}
			unfixBackgroundsForIE();
			zooming = false;
		});
		return false;
	}

	function switchBackgroundImagesTo(to) {
		$('#zoom_table td').each(function(i) {
			var bg = $(this).css('background-image').replace(/\.(png|gif|none)\"\)$/, '.' + to + '")');
			$(this).css('background-image', bg);
		});
		var close_img = zoom_close.children('img');
		var new_img = close_img.attr('src').replace(/\.(png|gif|none)$/, '.' + to);
		close_img.attr('src', new_img);
	}
	
	function fixBackgroundsForIE() {
		if ($.browser.msie && parseFloat($.browser.version) >= 7) {
			switchBackgroundImagesTo('gif');
		}
	}
	
	function unfixBackgroundsForIE() {
		if ($.browser.msie && $.browser.version >= 7) {
			switchBackgroundImagesTo('png');
		}
	}
}
})(jQuery);