if (!com) var com = {};
if (!com.corejsf) com.corejsf = {};
com.corejsf.spinner = {
   spin: function(field, increment) {
      var v = parseInt(field.value) + increment;
      if (isNaN(v)) return;
      if ('min' in field && v < field.min) return;
      if ('max' in field && v > field.max) return;
      field.value = v;
   }
};
