/** ng **/
function update_cot(grano){
	var url 	=	'action.php';
	var pars	= 'grano='+grano;
	var prec  = $('precios');
	
	var myAjax = new Ajax.Request(url,{
		method: 'post',
		parameters: pars,
		onLoading: function (transport){prec.innerHTML = "<tr><td align='center'><div align='center' class='loading'><img border='0' src='images/ajax-loader.gif'/><br/><p>Cargando..</p></div></td></tr>";},
		onSuccess: function (transport){prec.innerHTML = unescape(transport.responseText);}
	});
}