alert-icon- chromeclass-toolbar
- error-icon
- groove
- header
- indent
- listcell-iconic
- listitem-iconic
- menuitem-iconic
- menuitem-non-iconic
- message-icon
- monospace
- plain
- question-icon
- small-margin
- statusbarpanel-iconic
- statusbarpanel-iconic-text
- statusbarpanel-menu-iconic
- text-link
- thin
- tree-splitter
- treecol-image