Simple javascript tab implementation

Tabs.js

function Tabs(tabContainer) {
    this.tabs = [];
    var tablinks = tabContainer.getElementsByTagName('a');
    for (var i = 0; i < tablinks.length; i++) {
        this.tabs.push(new Tab(tablinks[i], this));
    }
    if (!this.active) {
        this.activate(this.tabs[0]);
    }
}

Tabs.prototype = {
    activate : function(newActiveTab) {
        if (this.active) {
            this.active.setInactive();
        }
        this.active = newActiveTab;
        this.active.setActive();
    }
}

function Tab(anchor, parent) {
    var me = this;

    me.link = anchor;
    me.content = document.getElementById(me.link.href.split('#')[1]);
    me.setInactive();

    me.link.onmousedown = function() {
        parent.activate(me);
    };
    me.link.onclick = function (e) {
        return false;
    };
}

Tab.prototype = {
    setActive : function() {
        this.link.parentNode.className += ' active';
        this.content.style.display = '';
    },

    setInactive : function() {
        this.link.parentNode.className = this.link.parentNode.className.replace(/ *active/,'');
        this.content.style.display = 'none';
    }
}