/**
 * iframe自适高度
 * ladys8.com.cn
 * linpm 2009-9-14
 **/
(function($){
	jQuery.fn.iframeAutoHeight = function(settings){
		settings = jQuery.extend({                   
		}, settings); 
		return this.each(function(){
			var $this = $(this);
			var src = $this.attr('src');
			$this.load(function(){
				var contentHeight = this.contentDocument?this.contentDocument.body.scrollHeight:$this.contents().find('.pk_item').height() + 30;
                $this.css('height',contentHeight);
				//alert(this.Document.body.offsetHeight);
			});
			$this.attr('src', src);
		});
	};
})(jQuery);