[jQuery] how to call a function at outside object in jQuery's click function?

[jQuery] how to call a function at outside object in jQuery's click function?


I met a small problem that an outside 'example' object does not be got
in a 'click' function.
would you tell me how to do that?
==
example code:
==
var Example = function(){};
Example.prototype = {
i_want_to_call_this_function: function(){
alert('Hi!');
},
execute: function(){
$('#any_button').click(function(){
// How to call 'i_want_to_call_this_function' from here?
// this.i_want_to_call_this_function(); // -> Unknown. i know a
'this' object pointed to html object.
});
}
};
var example = new Example();
example.execute();