function update_clock() 
  {
    var date    = new Date();
	
    var hours   = date.getHours().toString();
	var minutes = date.getMinutes().toString();
	var seconds = date.getSeconds().toString();
	      
	var h1 = hours.substr(0,1);
	var h2 = hours.substr(1,2);
		  
	var m1 = minutes.substr(0,1);
	var m2 = minutes.substr(1,2);
		  
	var s1 = seconds.substr(0,1);
	var s2 = seconds.substr(1,2);
		  
	if(hours < 10)   { h2 = h1; h1 = '0'; }
    if(minutes < 10) { m2 = m1; m1 = '0'; }
    if(seconds < 10) { s2 = s1; s1 = '0'; }
		  
    $("clock").update(h1+h2+":"+m1+m2+":"+s1+s2);		 
	
	setTimeout("update_clock()",1000);	
  }

update_clock();