/* author: Enric Tremps */
/* creation date: 19/05/2009 */


function nifCheck(nifStr)
{
   var lookup = 'TRWAGMYFPDXBNJZSQVHLCKE';

if ((nifStr.charAt(nifStr.length - 1)) == (lookup.charAt((nifStr.substr(0,8)) % 23))) return true; else return false
}