添加关照、全局等高线、修改图层问题

static/sdk/3rdparty/libgif.js

@@ -926,8 +926,14 @@
             get_current_frame: function() { return player.current_frame() },
             load_url: function(src,callback){
                 if (!load_setup(callback)) return;
-
                 var h = new XMLHttpRequest();
+                h.onreadystatechange = function() {
+                    if (h.readyState == 4) {
+                        if (h.status == 404) {
+                            callback(404)
+                        }
+                    }
+                };
                 // new browsers (XMLHttpRequest2-compliant)
                 h.open('GET', src, true);