var tabs = [];
var activeTabTimer = 0;
var activeTabIndex = 0;
       
function SetActiveTab(){
    activeTabIndex = GetActiveTabIndex();
    document.getElementById("tab"+activeTabIndex).className = "active";
}
 
function ActivateTab(tabIndex) {
    clearTimeout(activeTabTimer);
    if (activeTabIndex != tabIndex) {
        var currentTab = document.getElementById("tab"+tabIndex);
        var activeTab = document.getElementById("tab"+activeTabIndex);

        activeTab.className = "";
        currentTab.className = "active";
        activeTabIndex = tabIndex;
    } 
}

function ActivateTabTimer(tabIndex) {
    
    var activeTabGroup = document.getElementById("activeTabGroup");
    var activeTabId = document.getElementById("activeTabIndex");
    activeTabTimer = setTimeout("ActivateTab(GetActiveTabIndex())", 350);
}

function GetActiveTabIndex() {
    var pageUrl = new String(window.location);
    
    for (var i = 0; i < tabs.length; i++) {
          if (pageUrl.indexOf(tabs[i]) > 0) {
              return i;
          }
    }
    return 0;
}