$.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;
};