(function($){
$.fn.bgIframe = $.fn.bgiframe = 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="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);