From WilhelmWiki
/* Any JavaScript here will be loaded for all users on every page load. */
if (mwCustomEditButtons) {
mwCustomEditButtons[mwCustomEditButtons.length] = {
"imageFile": "http://http://www.thewilhelms.net/skins/common/images/Button_redirect.png",
"speedTip": "Redirect",
"tagOpen": "#REDIRECT [[",
"tagClose": "]]",
"sampleText": "Insert text"};
mwCustomEditButtons[mwCustomEditButtons.length] = {
"imageFile": "http://http://www.thewilhelms.net/skins/common/images/Button_tree.png",
"speedTip": "Blank family tree",
"tagOpen": "<br />",
"tagClose": "",
"sampleText": ""};
}