/* 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: 2007-06-20 03:23:36 +0200 (Mi, 20 Jun 2007) $
 * $Rev: 2110 $
 *
 * Version 2.1
 */

(function($){

$.fn.bgIframe = $.fn.bgiframe = function(s) {
        // This is only for IE6
        if ( $.browser.msie && parseInt($.browser.version) <= 6 ) {
                s = $.extend({
                        top     : 'auto', // auto == .currentStyle.borderTopWidth
                        left    : 'auto', // auto == .currentStyle.borderLeftWidth
                        width   : 'auto', // auto == offsetWidth
                        height  : 'auto', // auto == offsetHeight
                        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;
};

// Add browser.version if it doesn't exist
if (!$.browser.version)
        $.browser.version = navigator.userAgent.toLowerCase().match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/)[1];

})(jQuery);