纯JavaScript时钟

下面框中为脚本显示区

脚本说明：
第一步:把如下代码加入<head>区域中:
<SCRIPT language=javascript>
<!--
pX=400;pY=200
obs = new Array(13)
function ob () {
for (i=0; i<13; i++) {
	if (document.all) obs[i]=new Array (eval('ob'+i).style,-100,-100)
	else obs[i] = new Array (eval('document.ob'+i),-100,-100)
	}
}
function cl(a,b,c){
	if (document.all) {
		if (a!=0) b+=-1
		eval('c'+a+'.style.pixelTop='+(pY+(c)))
		eval('c'+a+'.style.pixelLeft='+(pX+(b)))
		}
else{
	if (a!=0) b+=10
	eval('document.c'+a+'.top='+(pY+(c)))
	eval('document.c'+a+'.left='+(pX+(b)))
}
if (document.all) c0.style.pixelLeft=26
}

function runClock() {
	for (i=0; i<13; i++) {
		obs[i][0].left=obs[i][1]+pX
		obs[i][0].top=obs[i][2]+pY
	}
}

var lastsec
function timer() {
	time = new Date ()
	sec = time.getSeconds()
	if (sec!=lastsec) {

lastsec = sec
		sec=Math.PI*sec/30
		min=Math.PI*time.getMinutes()/30
		hr =Math.PI*((time.getHours()*60)+time.getMinutes())/360
		for (i=1;i<6;i++) {
			obs[i][1] = Math.sin(sec) * (44 - (i-1)*11)-16;
			if (document.layers)obs[i][1]+=10;
			obs[i][2] = -Math.cos(sec) * (44 - (i-1)*11)-27;
		}
		for (i=6;i<10;i++) {
			obs[i][1] = Math.sin(min) * (40 - (i-6)*10)-16;
			if (document.layers)obs[i][1]+=10;
			obs[i][2] = -Math.cos(min) * (40 - (i-6)*10)-27;
		}
		for (i=10;i<13;i++) {
			obs[i][1] = Math.sin(hr) * (37 - (i-10)*11)-16;
			if (document.layers)obs[i][1]+=10;
			obs[i][2] = -Math.cos(hr) * (37 - (i-10)*11)-27;
		}
	}

}
function setNum(){

cl (0,-67,-65);
cl (1,10,-51);
cl (2,28,-33);
cl (3,35,-8);
cl (4,28,17);
cl (5,10,35);
cl (6,-15,42);
cl (7,-40,35);
cl (8,-58,17);
cl (9,-65,-8);
cl (10,-58,-33);
cl (11,-40,-51);
cl (12,-16,-56);

}

//-->

</SCRIPT>

第二步:把<body>中加入如下代码：
<div id="c0" style="position:absolute;right:6;top:6; z-index:2;"> 
   </div>
        <div id="c1" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>1</b></div>
        <div id="c2" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>2</b></div>
        <div id="c3" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>3</b></div>
        <div id="c4" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>4</b></div>
        <div id="c5" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>5</b></div>
        <div id="c6" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>6</b></div>
        <div id="c7" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>7</b></div>
        <div id="c8" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>8</b></div>
        <div id="c9" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>9</b></div>
        <div id="c10" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>10</b></div>
        <div id="c11" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>11</b></div>
        <div id="c12" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>12</b></div>
        <div id="ob0" style="position:absolute;left:-20;top:-20;z-index:1">  </div>
        <div id="ob1" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
        <div id="ob2" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
        <div id="ob3" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
        <div id="ob4" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
        <div id="ob5" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
        <div id="ob6" style="position:absolute;left:-20;top:-20;z-index:7"> <font size="+3" color="#00FFFF"><b>.</b></font></div>
        <div id="ob7" style="position:absolute;left:-20;top:-20;z-index:7"> <font size="+3" color="#00FFFF"><b>.</b></font></div>
        <div id="ob8" style="position:absolute;left:-20;top:-20;z-index:7"> <font size="+3" color="#00FFFF"><b>.</b></font></div>
        <div id="ob9" style="position:absolute;left:-20;top:-20;z-index:7"> <font size="+3" color="#00FFFF"><b>.</b></font></div>
        <div id="ob10" style="position:absolute;left:-20;top:-20;z-index:6"> <font size="+3" color="#F30000"><b>.</b></font></div>
        <div id="ob11" style="position:absolute;left:-20;top:-20;z-index:6"> <font size="+3" color="#F30000"><b>.</b></font></div>
        <div id="ob12" style="position:absolute;left:-20;top:-20;z-index:6"> <font size="+3" color="#F30000"><b>.</b></font></div>

第三步：把<body>中内容改为：
<body bgcolor="#fef4d9" onLoad="ob(),setNum(),setInterval('timer()',100);setInterval('runClock()',100)">