Continue work on itb

tools/itb/js/mouse.js

@@ -0,0 +1,12 @@
+function getMousePosition() {
+    return {
+        screenX: window.screenX,
+        screenY: window.screenY,
+        clientX: window.event ? window.event.clientX : 0,
+        clientY: window.event ? window.event.clientY : 0
+    };
+}
+
+function getElementAtPosition(x, y) {
+    return document.elementFromPoint(x, y);
+}