function initTabs()
{
    var sets = document.getElementsByTagName("div");
    for (var i = 0; i < sets.length; i++)
    {
        if (sets[i].className.indexOf("tabset") != -1)
        {
            var tabs = [];
            var links = sets[i].getElementsByTagName("area");
            for (var j = 0; j < links.length; j++)
            {
                if (links[j].className.indexOf("tab") != -1)
                {
                    tabs.push(links[j]);
                    links[j].tabs = tabs;
                    var c = document.getElementById(links[j].href.substr(links[j].href.indexOf("#") + 1));

                    //reset all tabs on start
                    if (c) if (links[j].className.indexOf("active") != -1) c.style.display = "block";
                    else c.style.display = "none";

                    links[j].onclick = function ()
                    {
                        var c = document.getElementById(this.href.substr(this.href.indexOf("#") + 1));
                        if (c)
                        {
                            //reset all tabs before change
                            for (var i = 0; i < this.tabs.length; i++)
                            {
                                document.getElementById(this.tabs[i].href.substr(this.tabs[i].href.indexOf("#") + 1)).style.display = "none";
                                this.tabs[i].className = this.tabs[i].className.replace("active", "");
                            }
                            this.className += " active";
                            c.style.display = "block";
                            return false;
                        }
                    }
                }
            }
        }
    }
}

if (window.addEventListener) window.addEventListener("load", initTabs, false);
else if (window.attachEvent) window.attachEvent("onload", initTabs);