here's how to make taxonomy images show up in the event calendar

I wanted little images relating to the taxonomy of the event (in this case, the hosting organization). Add the following piece of code at the beginning of the function theme_event_node_month in the file event.theme (just the if-statement shown below). Put it as the first line of code in the function.works for 4.6 (NOT FOR 4.7)

/**
 * Format an event node for display in an expanded calendar, like a calendar page
 *
 * @param node
 *   The node being displayed
 * @param module
 *   The name of the external module calling the function. Default: null;
 */
function theme_event_node_month($node, $module = NULL) {
  static $stripe, $stripe_map;

if (module_exist("taxonomy_image") ) {
      foreach (taxonomy_node_get_terms($node->nid) as $term) {
        $images[] = taxonomy_image_display($term->tid, "alt='$term->name'");
      }
}
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