function createCookie(name, value, days){
if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
    }
  else var expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name){
  var ca = document.cookie.split(';');
  var nameEQ = name + "=";
  for(var i=0; i < ca.length; i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1, c.length); //delete spaces
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
    }
  return null;
}

function eraseCookie(name){
  createCookie(name, "", -1);
}

function Mostrar(element){
      if(element.style.display == 'none'){
       element.style.display = '';
       var menu=createCookie(element.id,'-',1);
      }
      else{
       element.style.display = 'none';
       var menu=createCookie(element.id,'+',1);
      }
     }

function Verificar(element) {
if (readCookie(element.id) == '-') {
       element.style.display = '';
    }
}

function OcultarOtros(doc,num,max){
   for (i=0; i<=max; i++) {
     if (i != num) {
       element = doc.getElementById('element' + i);
       element.style.display = 'none';
       var menu=createCookie(element.id,'+',1);
 	 }
   }
}