buttonIcons *1.3*
=================
Determines which theme icons appear within the header buttons.
Object, *default:*
{
prev: 'circle-triangle-w',
next: 'circle-triangle-e'
}
This option only applies to calendars that have the [theme]() option enabled.
A hash must be supplied that maps button names (from the [header]()) to icon strings.
The icon strings determine the CSS class that will be used on the button. For example, the
string `'circle-triangle-w'` will result in the class `'ui-icon-triangle-w'`.
If a button does not have an entry, it falls back to using [buttonText](../text_customization/buttonText).