/* Copyright (c) 2006 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.
 *
 * $LastChangedDate: 2007-07-21 18:45:56 -0500 (Sat, 21 Jul 2007) $
 * $Rev: 2447 $
 *
 * Version 2.1.1
 */
(function($) {
	$.fn.bgIframe = $.fn.bgiframe = function(s) {
		if ($.support.msie && /6.0/.test(navigator.userAgent) && document.documentMode != 10) {
			s = $.extend({
				top : 'auto',
				left : 'auto',
				width : 'auto',
				height : 'auto',
				opacity : true,
				src : 'javascript:false;'
			}, s || {});
			var prop = function(n) {
				return n && n.constructor == Number ? n + 'px' : n;
			}, html = '<iframe class="bgiframe" frameborder="0" tabindex="-1" src="'
					+ s.src
					+ '"'
					+ ' style="display:block;position:absolute;z-index:-1;'
					+ (s.opacity !== false ? 'filter:Alpha(Opacity=\'0\');'
							: '')
					+ 'top:'
					+ (s.top == 'auto' ? 'expression(((parseInt(this.parentNode.currentStyle.borderTopWidth)||0)*-1)+\'px\')'
							: prop(s.top))
					+ ';'
					+ 'left:'
					+ (s.left == 'auto' ? 'expression(((parseInt(this.parentNode.currentStyle.borderLeftWidth)||0)*-1)+\'px\')'
							: prop(s.left))
					+ ';'
					+ 'width:'
					+ (s.width == 'auto' ? 'expression(this.parentNode.offsetWidth+\'px\')'
							: prop(s.width))
					+ ';'
					+ 'height:'
					+ (s.height == 'auto' ? 'expression(this.parentNode.offsetHeight+\'px\')'
							: prop(s.height)) + ';' + '"/>';
			return this.each(function() {
				if ($(this).find('iframe.bgiframe').length == 0){
					this.insertBefore(document.createElement(html),
							this.firstChild);
				}
			});
		}
		return this;
	};
})(jQuery);