JS Does Not Execute The Expression?

I have the following function:

function sonKare(sayac, oteki) {
var vertical, horizontal = hangiYataySira(sayac, oteki), j, k,
l, m, united, tekRakam, actualV = [], actualH = [],
numaralar = [1, 2, 3, 4, 5, 6, 7, 8, 9], olmayanlar = [];

[Code].....

This is a recursive function. As stated above there is a line which does not work for the second time. What I mean is, it works perfect for the first time and after function calls itself, it doesn't work. Javascript does execute the line above it but just disregards that document.form1.buton.click(); line. I use Firebug for debugging and I checked it many times, when that expression needs to be executed for the second time, JavaScript just ignores it and immediately goes at the end of the function... I just can't figure out why JS does such a thing?