cross browser. jslint.

diff --git a/skins/photo_lightbox_viewer.js b/skins/photo_lightbox_viewer.js
index c030fbb..017dbc0 100644 (file)
--- a/skins/photo_lightbox_viewer.js
+++ b/skins/photo_lightbox_viewer.js
@@ -59,12 +59,12 @@ Lightbox.prototype._buildSlidesIndex = function() {
 };
 
 Lightbox.prototype.windowScrollToolbarlHandler = function(evt) {
-       if (this.toolbar.offsetTop < window.scrollY && !this.toolbarFixed) {
+       if (this.toolbar.offsetTop < getWindowScrollY() && !this.toolbarFixed) {
                this.toolbarFixed = true;
                this.backThreshold = this.toolbar.offsetTop;
                this.switchToolBarPositioning(true);
        }
-       else if (this.toolbarFixed && window.scrollY < this.backThreshold) {
+       else if (this.toolbarFixed && getWindowScrollY() < this.backThreshold) {
                this.toolbarFixed = false;
                this.switchToolBarPositioning(false);
        }
@@ -72,7 +72,9 @@ Lightbox.prototype.windowScrollToolbarlHandler = function(evt) {
 Lightbox.prototype.windowScrollGridHandler = function(evt) {
        if (!this.complete &&
                !this.fetchingDisabled &&
-               window.scrollY > this.lastSlide.firstElementChild.offsetTop - getWindowHeight()) {
+               getWindowScrollY() >
+                       (this.lastSlide.firstElementChild || this.lastSlide.children[0]).offsetTop
+                        - getWindowHeight()) {
                this.fetchingDisabled = true;
                this.fetchTail();
        }
@@ -322,7 +324,7 @@ Lightbox.prototype.refreshGrid = function() {
                        case 4 :
                                hideProgressImage();
                                if (req.status === 200) {
-                                       self._refreshGrid(req)
+                                       self._refreshGrid(req);
                                }
                                break;
                }
@@ -353,7 +355,7 @@ Lightbox.prototype._refreshGrid = function(req) {
 
 Lightbox.prototype.fetchTail = function() {
        var req = new XMLHttpRequest();
-       self = this;
+       var self = this;
        req.onreadystatechange = function() {
                switch (req.readyState) {
                        case 1 :
@@ -362,7 +364,7 @@ Lightbox.prototype.fetchTail = function() {
                        case 4 :
                                hideProgressImage();
                                if (req.status === 200) {
-                                       self._appendTail(req)
+                                       self._appendTail(req);
                                }
                                break;
                }