// JavaScript Document

			function startTime(t1,t2,t3) 
			{
			var tt1 = parseInt(t1);
			var tt2 = parseInt(t2);
			var tt3 = parseInt(t3);
			var today=new Date(); 
			var h=today.getHours(); 
			var m=today.getMinutes(); 
			var s=today.getSeconds(); 
			//add a zero in front of numbers which<10
			if(h+tt1>24){
				eh=h-24+tt1;
			}else if(h+tt1 <0 ){
				eh=h+24+tt1;
			}else{
				eh=h+tt1;
			}
			
			if(h+tt2>24){
				uwh=h-24+tt2;
			}else if(h+tt2 <0 ){
				uwh=h+24+tt2;
			}else{
				uwh=h+tt2;
			}
			
			if(h+tt3>24){
				ueh=h-24+tt3;
			}else if(h+tt3 <0 ){
				ueh=h+24+tt3;
			}else{
				ueh=h+tt3;
			}
			

			
/*			if(h+tt2>=24){
				uwh=h+tt2-24;
			}else{
				uwh=h+tt2;
			}
			if(h+tt3>=24){
				ueh=h+tt3-24;
			}else{
				ueh=h+tt3;
			}*/
			engh=checkTime(eh);
			engm=checkTime(m);
			engs=checkTime(s);
			uswesth=checkTime(uwh);
			uswestm=checkTime(m);
			uswests=checkTime(s);
			useasth=checkTime(ueh);
			useastm=checkTime(m);
			useasts=checkTime(s);
			h=checkTime(h); 
			m=checkTime(m); 
			s=checkTime(s);
			document.getElementById('hkTime').innerHTML="&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;香港時間 "+h+":"+m+":"+s+"<br>";
			document.getElementById('engTime').innerHTML="<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;英國時間 "+engh+":"+engm+":"+engs;
			document.getElementById('uswestTime').innerHTML="<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;美國西岸時間 "+uswesth+":"+uswestm+":"+uswests;
			document.getElementById('useastTime').innerHTML="&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;美國東岸時間 "+useasth+":"+useastm+":"+useasts;
			
			t=setTimeout('startTime('+t1+','+t2+','+t3+')',1000); 
			} 
			//add a zero in front of numbers which<10 
			function checkTime(i) 
			{ 
			if (i<10) 
			{ 
			i="0" + i;
			} 
			return i;
			}