text: function validate(evt) {
      var theEvent = evt || window.event;
      var key = theEvent.keyCode || theEvent.which;
      key = String.fromCharCode( key );
      var regex = /[0-9]|\./;
      if( !regex.test(key) ) {
          theEvent.returnValue = false;
          if(theEvent.preventDefault) theEvent.preventDefault();
      }
  }