help white script

Hey i found this script.

function startTimeUp(timeleft,counter)
{
if(timeleft > 0)
{
timeleft = parseInt(timeleft)+1;

var min_count = timeleft/60;
min_count = Math.floor(min_count);

if(min_count > 0)
{
var std_count = min_count/60;
std_count = Math.floor(std_count);
min_count = min_count-(std_count*60);
}
else{
var std_count = 0;
}

if(std_count > 24)
{
var day_count = std_count/24;
day_count = Math.floor(day_count);
std_count = std_count-(day_count*24);
}
else{
var day_count = 0;
}

if(min_count < 10)
{
var min_angabe = ‘0’+min_count;
}
else{
var min_angabe = min_count;
}

document.getElementById(“counter”+counter).innerHTML = std_count+”:”+min_angabe;
window.setTimeout(“startTimeUp(‘”+timeleft+”‘,'”+counter+”‘);”,1000);

}
else
{
document.getElementById(“counter”+counter).innerHTML = “”;
}

}

<script language=”JavaScript” type=”text/javascript” src=”/js/countdown.js”></script>
<span id=’counterCurrentTime’></span>
<script language=”javascript” type=”text/javascript”>startTimeUp(‘xxx’,’CurrentTime’);</script>

Only i cant find out with what i have to replace the xxx ?
in this line
<script language=”javascript” type=”text/javascript”>startTimeUp(‘xxx’,’CurrentTime’);</script>

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