var tick;


 function stop() {
   clearTimeout(tick);
   }
   
 function simpleClock() {
   var ut=new Date();
   var h,m,s;
   var time="        ";
   h=ut.getHours();
   m=ut.getMinutes();
   s=ut.getSeconds();
   if(s<=9) s="0"+s;
   if(m<=9) m="0"+m;
   if(h<=9) h="0"+h;
   //time+=h+":"+m+":"+s;
	time+=h+":"+m;
   document.getElementById('clock').innerHTML=time;
   tick=setTimeout("simpleClock()",1000);   
}


window.addEvent('load', function() {
	if($defined($('clock'))) {
		simpleClock();	
	}
});

window.addEvent('unload', function() {
	if($defined($('clock'))) {
		stop();	
	}
});