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// IMAGE SELECT
jQuery(document).ready(function($) {
    if ($('.wpt_set_custom_images').length > 0) {
        if ( typeof wp !== 'undefined' && wp.media && wp.media.editor) {
            $(document).on('click', '.wpt_set_custom_images', function(e) {
                e.preventDefault();
                var button = $(this);
                var id = button.prev();
                wp.media.editor.send.attachment = function(props, attachment) {
                    id.val(attachment.url);
                };
                wp.media.editor.open(button);
                return false;
            });
        }
    }
});