* Switch an RC line between hidden/shown
* @param int idNumber : the id number of the RC group
*/
-function toggleVisibility(idNumber) {
+window.toggleVisibility = function(idNumber) {
var openarrow = document.getElementById("mw-rc-openarrow-"+idNumber);
var closearrow = document.getElementById("mw-rc-closearrow-"+idNumber);
var subentries = document.getElementById("mw-rc-subentries-"+idNumber);