Fix issue #8

src/extension.js

@@ -148,14 +148,14 @@ WeatherMenuButton.prototype = {
 	switch (this._position_in_panel) {
 	    case WeatherPosition.LEFT:
 		children = Main.panel._leftBox.get_children();
-		Main.panel._leftBox.insert_actor (this.actor, children.length-1);
+		Main.panel._leftBox.add(this.actor, children.length-1);
 		break;
 	    case WeatherPosition.CENTER:
 		Main.panel._centerBox.add(this.actor, { y_fill: true });
 		break;
 	    case WeatherPosition.RIGHT:
 		children = Main.panel._rightBox.get_children();
-		Main.panel._rightBox.insert_actor(this.actor, children.length-1);
+		Main.panel._rightBox.insert_child_at_index(this.actor, 0);
 		break;
 	}