.twistyHidden { display:none; }
.twistyMakeHidden {} /* reserved */
.twistyMakeVisible { display:none; }

.twistyPlaceholder { /* color to be implemented by skin */ }
.twistyRememberSetting { /* behavior class */ }
.twistyForgetSetting { /* behavior class */ }
.twistyStartHide { /* behavior class */ }
.twistyStartShow { /* behavior class */ }