/*
 * 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: 2007-07-22 01:45:56 +0200 (Son, 22 Jul 2007) $ $Rev: 2447 $
 * 
 * Version 2.1.1
 */
(function($) {
	$.fn.bgIframe = $.fn.bgiframe = function(s) {
		if ($.browser.msie && /6.0/.test(navigator.userAgent)) {
			s = $.extend({
						top : 'auto',
						left : 'auto',
						width : 'auto',
						height : 'auto',
						opacity : true,
						src : 'javascript:false;'
					}, s || {});
			var prop = function(n) {
				return n && n.constructor == Number ? n + 'px' : n;
			}, html = '<iframe class="bgiframe"frameborder="0"tabindex="-1"src="'
					+ s.src
					+ '"'
					+ 'style="display:block;position:absolute;z-index:-1;'
					+ (s.opacity !== false
							? 'filter:Alpha(Opacity=\'0\');'
							: '')
					+ 'top:'
					+ (s.top == 'auto'
							? 'expression(((parseInt(this.parentNode.currentStyle.borderTopWidth)||0)*-1)+\'px\')'
							: prop(s.top))
					+ ';'
					+ 'left:'
					+ (s.left == 'auto'
							? 'expression(((parseInt(this.parentNode.currentStyle.borderLeftWidth)||0)*-1)+\'px\')'
							: prop(s.left))
					+ ';'
					+ 'width:'
					+ (s.width == 'auto'
							? 'expression(this.parentNode.offsetWidth+\'px\')'
							: prop(s.width))
					+ ';'
					+ 'height:'
					+ (s.height == 'auto'
							? 'expression(this.parentNode.offsetHeight+\'px\')'
							: prop(s.height)) + ';' + '"/>';
			return this.each(function() {
						if ($('> iframe.bgiframe', this).length == 0)
							this.insertBefore(document.createElement(html),
									this.firstChild);
					});
		}
		return this;
	};
})(jQuery);