$.fn.bbgiframe = function(s) {
    // This is only for IE6
    if ( $.browser.msie && /6.0/.test(navigator.userAgent) ) {
        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="bbgiframe"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.bbgiframe', this).length == 0 )
                        this.insertBefore( document.createElement(html), this.firstChild );
        });
    }
    return this;
};