Force Menus to stay on screen

.dist/contextmenu.js

@@ -47,6 +47,7 @@ class Contextmenu {
         div.style.top = y + 'px';
         div.style.left = x + 'px';
         document.body.appendChild(div);
+        Contextmenu.keepOnScreen(div);
         console.log(div);
         Contextmenu.currentmenu = div;
         return this.div;
@@ -61,6 +62,18 @@ class Contextmenu {
         return func;
     }
     static keepOnScreen(obj) {
+        const html = document.documentElement.getBoundingClientRect();
+        const docheight = html.height;
+        const docwidth = html.width;
+        const box = obj.getBoundingClientRect();
+        console.log(box, docheight, docwidth);
+        if (box.right > docwidth) {
+            console.log("test");
+            obj.style.left = docwidth - box.width + 'px';
+        }
+        if (box.bottom > docheight) {
+            obj.style.top = docheight - box.height + 'px';
+        }
     }
 }
 Contextmenu.setup();