function chkCharInvalidos(vStr){
 var invalidChars = "#$%+§ªº°°?|<>{}[]¨¢^~`´";
 var lOK = true;
 
 for (i=0; i<invalidChars.length; i++) {
  badChar = invalidChars.charAt(i);
  if ((vStr.indexOf(badChar,0) > -1) && lOK) {
   lOK = false;
  }
 }
 return lOK;
}