var MaxLengthLock = false;
      function MaxLengthCount(fieldObj,fieldMaxLength)
      {
        if (!MaxLengthLock)
        {
          MaxLengthLock = true;
          if (fieldObj.value.length > fieldMaxLength)
          {
            alert("Text je delší než " + fieldMaxLength + " znaků!");
            fieldObj.value = fieldObj.value.substring(0,fieldMaxLength);
          }
          var percentage = parseInt(100 - (( fieldMaxLength - fieldObj.value.length) * 100)/fieldMaxLength);
          document.getElementById(fieldObj.id + "_PBar").style.width = parseInt((parseInt(fieldObj.offsetWidth)*percentage)/100)+"px";
          MaxLengthLock = false;
        }
      }