jQuery.fn.fancyZoom = function (options) {

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

    if (jQuery('#zoom').length == 0) {
        var ext = jQuery.browser.msie ? 'gif' : 'png';
        var html = '<div id="zoom" style="display:none; z-index: 20"> \
                  <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>';

        jQuery('#aspnetForm').append(html);
        jQuery('#form1').append(html);

        /*jQuery('html').click(function (e) {
            if (jQuery(e.target).parents('#zoom:visible').length == 0) hide();
        });*/

        jQuery(document).keyup(function (event) {
            if (event.keyCode == 27 && jQuery('#zoom:visible').length > 0) hide();
        });

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

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

    this.each(function (i) {
        jQuery(jQuery(this).attr('href')).hide();
        jQuery(this).click(show);
    });

    return this;

    function show(e) {
        if (zooming) return false;
        zooming = true;

        var link = jQuery(this);

        var content_div = jQuery(jQuery(this).attr('href'));
        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');

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

        fixBackgroundsForIE();
        zoom_close.hide();

        if (options.closeOnClick) {
            jQuery('#zoom').click(hide);
        }

        if (options.scaleImg) {
            zoom_content.html(content_div.html());
            jQuery('#zoom_content img').css('width', '100%');
        } else {
            zoom_content.html('');
        }

        jQuery('#zoom').animate({
            top: newTop + 'px',
            left: newLeft + 'px',
            opacity: "show",
            width: width,
            height: height
        }, 500, null, function () {
            if (options.scaleImg != true) {
                zoom_content.html(content_div.html());
            }
            unfixBackgroundsForIE();
            zoom_close.show();
            zooming = false;

            if (options.onLoad != null) {
                options.onLoad(link);
            }

        })
        return false;
    }

    function hide() {

        if (typeof(CKEDITOR) !== 'undefined') {
            //alert(CKEDITOR.instances['cms_editor']);
            if (CKEDITOR.instances['cms_editor']) {
                CKEDITOR.instances['cms_editor'].destroy();
            }
        }

        if (zooming) return false;
        zooming = true;
        jQuery('#zoom').unbind('click');
        fixBackgroundsForIE();
        if (zoom_close.attr('scaleImg') != 'true') {
            zoom_content.html('');
        }
        zoom_close.hide();
        jQuery('#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) {
        jQuery('#zoom_table td').each(function (i) {
            var bg = jQuery(this).css('background-image').replace(/\.(png|gif|none)\"\)$/, '.' + to + '")');
            jQuery(this).css('background-image', bg);
        });
        var close_img = zoom_close.children('img');
        var new_img = close_img.attr('src').replace(/\.(png|gif|none)$/, '.' + to);
        close_img.attr('src', new_img);
    }

    function fixBackgroundsForIE() {
        if (jQuery.browser.msie && parseFloat(jQuery.browser.version) >= 7) {
            switchBackgroundImagesTo('gif');
        }
    }

    function unfixBackgroundsForIE() {
        if (jQuery.browser.msie && jQuery.browser.version >= 7) {
            switchBackgroundImagesTo('png');
        }
    }
}