getElementById question

[yaron]

Hello all,
I have a bunch of checkboxs under the same name but different id.
I want to write a function that gets an id and checks if the specified checkbox is checked or not
is that possible with getElementById? if yes how and if no so what can i do?
Thanks

[Fang]

if(document.getElementById(theID).checked==true) {
//do something
}

[yaron]

and thanks again