/* Copyright (c) 2006 Brandon Aaron (http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) 
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * $LastChangedDate: 2007-07-21 18:45:56 -0500 (Sat, 21 Jul 2007) $
 * $Rev: 2447 $
 *
 * Version 2.1.1
 */
(function($) {
    $.fn.bgIframe = $.fn.bgiframe = function(s) {
        if ($.browser.msie && /6.0/.test(navigator.userAgent)) {
            s = $.extend({top:'auto',left:'auto',width:'auto',height:'auto',opacity:true,src:'javascript:false;'}, s || {});
            var prop = function(n) {return n && n.constructor == Number ? n + 'px' : n;},html = '<iframe class="bgiframe"frameborder="0"tabindex="-1"src="' +
                                                                                                s.src + '"' +
                                                                                                'style="display:block;position:absolute;z-index:-1;' +
                                                                                                (s.opacity !== false ? 'filter:Alpha(Opacity=\'0\');' : '') +
                                                                                                'top:' + (s.top ==
                                                                                                          'auto' ? 'expression(((parseInt(this.parentNode.currentStyle.borderTopWidth)||0)*-1)+\'px\')' : prop(s.top)) +
                                                                                                ';' + 'left:' + (s.left ==
                                                                                                                 'auto' ? 'expression(((parseInt(this.parentNode.currentStyle.borderLeftWidth)||0)*-1)+\'px\')' : prop(s.left)) +
                                                                                                ';' + 'width:' + (s.width ==
                                                                                                                  'auto' ? 'expression(this.parentNode.offsetWidth+\'px\')' : prop(s.width)) +
                                                                                                ';' + 'height:' + (s.height ==
                                                                                                                   'auto' ? 'expression(this.parentNode.offsetHeight+\'px\')' : prop(s.height)) +
                                                                                                ';' + '"/>';
            return this.each(function() {if ($('> iframe.bgiframe', this).length == 0)this.insertBefore(document.createElement(html), this.firstChild);});
        }
        return this;
    };
})(jQuery);