trouble with load event in javascript class

[eluser]Giorgio Nordo[/eluser]
Hi everyone,
I am playing with the JavaScript class.
Although the documentation for such a class is far to be exaustive, I made some successful experiment but I found a problem with the following easy code:

Code:

$codice = $this->javascript->hide('#divlogin');
$this->javascript->load('#divlogin', $codice);  
$this->javascript->compile();

which should simply attach the hide function to the load event of the same div.
It seems correct to me but, it doesn't work at all.
Could someone help me in understanding why?
Thanks in advance,
Giorgio