$(function(){
	var $obj = $("#why-video");
	var url = 'http://player.youku.com/embed/XMjY';
	var width = $obj.width();
	var height = $obj.height();
	var parent_width = $obj.parent();
	var parent_height = $obj.parent();
	for( var i = 0 ; i < 5 ; i++ ){
		if( width < 5 ){
			width = parent_width.width();
			parent_width = parent_width.parent();
		}
		if( height < 5 ){
			height = parent_height.height();
			parent_height = parent_height.parent();
		}
	}
	$obj.html('<iframe src="' + url + '" frameborder="no" width="' + width + '" height="' + height + '"></iframe>');
});