/*! Copyright (c) 2008 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.
*
* Version 2.1.2-pre
*/
 
(function($){
 
/**
* @name bgiframe
* @type jQuery
* @cat Plugins/bgiframe
* @author Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
*/
$.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
    }, s || {});
    var prop = function(n){return n&&n.constructor==Number?n+'px':n;},
     html = '<iframe class="bgiframe" frameborder="0" tabindex="-1" src="javascript:\'<html></html>\';" '+
     '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);