Bunch of new theory pages

admin/js/core.js

@@ -29,6 +29,12 @@ function removeEvent(obj, evType, fn) {
     }
 }
 
+function cancelEventPropagation(e) {
+    if (!e) e = window.event;
+    e.cancelBubble = true;
+    if (e.stopPropagation) e.stopPropagation();
+}
+
 // quickElement(tagType, parentReference, textInChildNode, [, attribute, attributeValue ...]);
 function quickElement() {
     var obj = document.createElement(arguments[0]);
@@ -44,6 +50,11 @@ function quickElement() {
     return obj;
 }
 
+// "a" is reference to an object
+function removeChildren(a) {
+    while (a.hasChildNodes()) a.removeChild(a.lastChild);
+}
+
 // ----------------------------------------------------------------------------
 // Cross-browser xmlhttp object
 // from http://jibbering.com/2002/4/httprequest.html