I made a java timer everything works when all the code is in one file and separated. When I start doing anything about it create a separate js file and move the java code there and even when i try to insert it inside php nawiada in both cases it stops working how is it like here it works and it's great. but i want js in js file then it stops working, I think it is about "'these elements but I don't know, I'll tire of the timer, best regards

var secs = 0;
var element = "czas"; 
var T = null;
function count(id)
{
    temp = secs;
    if(secs > 0)
    {
        result = Math.floor(temp) + "  ";
        document.getElementById(element).innerHTML = result;
        secs--;
    }
    else
    {
        document.location="/"
        clearInterval(T);
    }
}
function counter(seconds)
{
    secs = seconds;
    T = window.setInterval("count()", 1000);
}


echo
    '<div id="czas"></div>
    <script type="text/javascript">counter(60);</script>'
;