Javascript static members

I have a problem with javascript. What I intend to do is to simulate a class named Tooltip. Ex:

var Tooltip = function(){

    this.draw = .....;
    /////////// other members and methods

    this.Static = ...; // this one I want to be static }

The problem is I can't find a method to declare a static method/member. And I presume that the above way doesn't work.
Is there any method to simulate a class with a static member? (preferably using object literals)

LE: I forgot to tell that I want to have acces to the static members from an instance of the class.