+Lightbox.prototype.refreshGrid = function() {
+ var req = new XMLHttpRequest();
+ self = this;
+ req.onreadystatechange = function() {
+ switch (req.readyState) {
+ case 1 :
+ showProgressImage();
+ break;
+ case 4 :
+ hideProgressImage();
+ if (req.status === 200) {
+ self._refreshGrid(req)
+ }
+ break;
+ }
+ };
+
+ var url = absolute_url() +
+ '/portfolio_thumbnails_tail?start:int=0&size:int=' +
+ this.grid.children.length;
+ req.open('GET', url, true);
+ req.send();
+};
+
+Lightbox.prototype._refreshGrid = function(req) {
+ var doc = req.responseXML.documentElement;
+ var i;
+ var slides = this.grid.children;
+ for (i=0 ; i<doc.children.length ; i++) {
+ this.grid.replaceChild(getCopyOfNode(doc.children[i]), slides[i]);
+ }
+};
+
+Lightbox.prototype.fetchTail = function() {
+ var req = new XMLHttpRequest();
+ self = this;
+ req.onreadystatechange = function() {
+ switch (req.readyState) {
+ case 1 :
+ showProgressImage();
+ break;
+ case 4 :
+ hideProgressImage();
+ if (req.status === 200) {
+ self._appendTail(req)
+ }
+ break;
+ }
+ };
+
+ var url = absolute_url() +
+ '/portfolio_thumbnails_tail?start:int=' +
+ String(this.grid.children.length + 1 ) +
+ '&size:int=10';
+ req.open('GET', url, true);
+ req.send();
+};
+
+Lightbox.prototype._appendTail = function(req) {
+ var doc = req.responseXML.documentElement;
+ var i;
+ var slides = this.grid.children;
+ for (i=0 ; i<doc.children.length ; i++) {
+ this.grid.replaceChild(getCopyOfNode(doc.children[i]), slides[i]);
+ }
+};
+