$ = jQuery;
$(document.body).on('infowindowopen.wpgmza', function (event) {
var marker = event.target.mapObject;
for( var i = 0; i < marker.categories; i++){
var category = WPGMZA.categories.getCategoryByID( marker.categories[i] );
console.log(category);
if (category) {
var display = category.name;
$('body').find('.wpgmza_infowindow_title').after('<div class="wpgmza_infowindow_categories">' + display + '</div>');
}
}
});