Mozilla Doesn't Handle Function Pointer Well?

I have the following code:
var ocevent = function(v)

{

alert('javascript event: u clicked '+v);

return false;

};

var items = {

"002.jpg": {text:"002", href:"#", click:function(){return ocevent(2)} },

"003.jpg": {text:"003", href:"#", click:function(){return ocevent(3)} },

....}

And I use the following code to assign the click property to onclick of
anchor.

a.setAttribute('onclick', items[id].click);

However, the code works well in IE but not in Mozilla Firefox. To test the
code go to: