var refresh = 5;
    var seconds = refresh;
  
    function webcamRefresh()
    {
				document.form.counter.value = --seconds;

		if (seconds <= 0)
		{
			var now = new Date();
			var imageURL = "/content/img/cam/webcam.jpg" + "?" + now.getTime();
			document.webcam.src = imageURL;
			seconds = refresh;
		}
		refreshTimer = setTimeout("webcamRefresh()", 1000);
    }