var timerID
var pause=1
var seconds=0
var tenseconds=0
var minutes=0
var tenminutes=0
var hours=0

function cstop()
{
  clearTimeout(timerID);
  pause=1;
}
function cstart()
{
  if (pause==1)
  {
    pause=0
    cdisplay()
  }
}
function creset()
{
  seconds=0
  tenseconds=0
  minutes=0
  hours=0
  document.forms["timer"].d2.value="  "+hours+":"+tenminutes+minutes+":"+tenseconds+seconds
}
function cdisplay()
{
  seconds+=1
  if (seconds>=10)
  {
    seconds=0
    tenseconds+=1
  }
  if (tenseconds>=6)
  {
    tenseconds=0
    minutes+=1
  }
  if (minutes>=10)
  {
    minutes=0
    tenminutes+=1
  }
  if (tenminutes>=6)
  {
    tenminutes=0
    hours+=1
  }
  document.forms["timer"].d2.value="  "+hours+":"+tenminutes+minutes+":"+tenseconds+seconds
  if (pause==0)
  {  
    timerID=window.setTimeout("cdisplay()",1000)
  }
}