Add data-lightbox-post and data-lightbox-href back in.

themes/bootstrap3/js/lightbox.js

@@ -106,15 +106,22 @@ VuFind.lightbox = (function() {
   /**
    * Modal link data options
    *
-   * data-lightbox-ignore = do not open this link in lightbox
+   * data-lightbox-href = go to this url instead
+   * data-lightbox-ignore = do not open this link in lightbox
+   * data-lightbox-post = post data
    */
   var _constrainLink = function(event) {
     if (typeof this.dataset.lightboxIgnore != 'undefined') {
       return true;
     }
     if (this.href.length > 1) {
-      event.preventDefault();
-      ajax({url: this.href});
+      event.preventDefault();
+      var obj = {url: this.dataset.lightboxHref || this.href};
+      if("string" === typeof this.dataset.lightboxPost) {
+        obj.type = 'POST';
+        obj.data = this.dataset.lightboxPost;
+      }
+      ajax(obj);
       _currentUrl = this.href;
       VuFind.modal('show');
       return false;