function Yetii(obj,active){

    this.active = (active) ? active : 1,
    this.timeout = null,
    this.tabclass = 'tab',
    this.activeclass = 'active',

    this.getTabs = function(){

        var retnode = [];
        var elem = document.getElementById(obj).getElementsByTagName('*');

        for (var i = 0; i < elem.length; i++) {
        if ((new RegExp('\\b'+this.tabclass+'\\b')).test(elem[i].className)) retnode.push(elem[i]);
        }

        return retnode;

    },

    this.links = document.getElementById(obj+'-nav').getElementsByTagName('a'),
    this.tabs = this.getTabs();

    this.show = function(number){

        for (var i = 0; i < this.tabs.length; i++) {
        this.tabs[i].style.display = ((i+1)==number) ? 'block' : 'none';
        this.links[i].className = ((i+1)==number) ? this.activeclass : '';
        }

    },

    this.rotate = function(interval){

        this.show(this.active);
        this.active++;

        if(this.active > this.tabs.length) this.active = 1;

        var self = this;
        this.timeout = setTimeout(function(){self.rotate(interval);}, interval*1000);

    },

    this.init = function(interval){

        this.show(this.active);

        var self = this;
        for (var i = 0; i < this.links.length; i++) {
        this.links[i].customindex = i+1;
        this.links[i].onclick = function(){ if (self.timeout) clearTimeout(self.timeout); self.show(this.customindex); return false; };
        }

        if (interval) this.rotate(interval);

    };

};