var panes = new Array();

function setupPanes(containerId, defaultTabId) {
    // go through the DOM, find each tab-container
    // set up the panes array with named panes
    // find the max height, set tab-panes to that height
    panes[containerId] = new Array();
    var maxHeight = 0; var maxWidth = 0;
    var container = document.getElementById(containerId);
    var paneContainer = container.getElementsByTagName("div")[0];
    var paneList = paneContainer.childNodes;
    for (var i=0; i < paneList.length; i++ ) {
        var pane = paneList[i];
        if (pane.nodeType != 1) continue;
        if (pane.offsetHeight > maxHeight) maxHeight = pane.offsetHeight;
        if (pane.offsetWidth  > maxWidth ) maxWidth  = pane.offsetWidth;
        panes[containerId][pane.id] = pane;
        pane.style.display = "none";
    }
    paneContainer.style.height = maxHeight + "px";
    paneContainer.style.width  = maxWidth + "px";
    document.getElementById(defaultTabId).onclick();
}

function showPane(paneId, activeTab) {
    // make tab active class
    // hide other panes (siblings)
    // make pane visible
    
    // work out which container this tab is part of. could also bounce on parent node
    for (var con in panes) {
        activeTab.blur();
        activeTab.className = "tab-active";
        if (panes[con][paneId] != null) { // tab and pane are members of this container
            var pane = document.getElementById(paneId);
            pane.style.display = "block";
            var container = document.getElementById(con);
            var tabs = container.getElementsByTagName("ul")[0];
            var tabList = tabs.getElementsByTagName("a")
            for (var i=0; i<tabList.length; i++ ) {
                var tab = tabList[i];
                if (tab != activeTab) tab.className = "tab-disabled";
            }
            for (var i in panes[con]) {
                var pane = panes[con][i];
                if (pane == undefined) continue;
                if (pane.id == paneId) continue;
                pane.style.display = "none"
            }
        }
    }
    return false;    
}