function startTime() { var t=new Date(); var h=t.getHours(); var m=t.getMinutes(); var s=t.getSeconds(); m=checkTime(m); s=checkTime(s); document.getElementById('txt').innerHTML=h+':'+m+':'+s; setTimeout('startTime()',1000); } function checkTime(i) { if(i<10) { i="0"+i; } return i; } </script> </head> <body onload="startTime()"> <div id="txt"></div> </body> </html>