// JavaScript Document
//var vble = $('sa');
var vble = document.getElementById('pizarra');
var vble2 = document.getElementById('id_area');
vble.onclick = function(){window.open('http://www.cima.es/pizarra_es.php?area=' + vble2.value,'pizarra','scrollbars=yes,resizable=yes,width=600,height=500');}