[jQuery] .trigger("click") // don't work? [newbie]

[GianCarlo Mingati]

HI,
i have these line on document.ready and using jquery-1.1.3.pack.js
(no, not 1.1.3.1):

$(function(){
        $('#chiamacap').trigger('click');


                                                $("a#chiamacap").bind("click", 
function(){
                                                        alert("hi");
                                                        });
});


The book says that you can simulate a click by using the trigger()
method.
If i click the #chiamacap link it runs an alert. wow ;-)
But by applying trigger() to $('#chiamacap') on load does not work.
What am i doing wrong?
GC