function replace_ribbon($obj)
	{
		var $myDiv = window.document.getElementById('rib');	
	
		if ($obj.id == 'null')
			{				
				$myDiv.className = $obj.id;
				cost.value = wthout.className + ' руб.';
			} 
		else 
			{
				$myDiv.className = $obj.id;
				cost.value = wth.className + ' руб.';
			}
	};

function replace_body($obj){
   var $myDiv = window.document.getElementById('body');
   $myDiv.className = $obj.id;
};