code: function(msg) {
        if(!this.fieldContainer) { return; }
        if(!this.msgEl) {
           this.msgEl = inputEx.cn('div', {className: 'inputEx-message'});
            try{
               var divElements = this.divEl.getElementsByTagName('div');
               this.divEl.insertBefore(this.msgEl, divElements[(divElements.length-1>=0)?divElements.length-1:0]); //insertBefore the clear:both div
            }catch(e){alert(e);}
        }
        this.msgEl.innerHTML = msg;
     }
docs: Update the message
  @param {String} msg Message to display