jQuery.fn.bgIframe = jQuery.fn.bgiframe = function() { if ( !(jQuery.browser.msie && typeof XMLHttpRequest == 'function') ) return this; var html = '<iframe class="bgiframe" src="javascript:false;document.write(\'\');" tabindex="-1" ' +'style="display:block; position:absolute; ' +'top: expression(((parseInt(this.parentNode.currentStyle.borderTopWidth)  || 0) * -1) + \'px\'); ' +'left:expression(((parseInt(this.parentNode.currentStyle.borderLeftWidth) || 0) * -1) + \'px\'); ' +'z-index:-1; filter:Alpha(Opacity=\'0\'); ' +'width:expression(this.parentNode.offsetWidth + \'px\'); ' +'height:expression(this.parentNode.offsetHeight + \'px\')"/>'; return this.each(function() { if ( !jQuery('iframe.bgiframe', this)[0] ) this.insertBefore( document.createElement(html), this.firstChild ); }); };