function initTabs() {


    var sets = document.getElementsByTagName("ul");
    for (var i = 0; i < sets.length; i++)
    {
        if (sets[i].className.indexOf("tabset") != -1)
        {
            var tabs = [];
            var links = sets[i].getElementsByTagName("a");
            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.position = "static";
                        c.style.top = "0";
                    }
                    else {
                        c.style.position = "absolute";
                        c.style.top = "-9999px";
                    }

                    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 < parseInt(this.tabs.length); i++) {
                                try {
                                    var tabblock = document.getElementById(this.tabs[i].href.substr(this.tabs[i].href.indexOf("#") + 1));
                                    tabblock.style.position = "absolute";
                                    tabblock.style.top = "-9999px";
                                } catch (ex) { }
                                this.tabs[i].className = this.tabs[i].className.replace("active", "");
                            }
                            this.className += " active";

                            c.style.position = "static";
                            c.style.top = "0";

                            return false;
                        }
                    }
                }
            }
        }
    }

}

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