請把以下的編碼放於<head></head>之內

<style>
.spanstyle {
color: #0066ff; font-family: Tahoma; font-size: 12pt;
font-weight: normal; position: absolute;
top: -50px; visibility: visible
}
</style>

請把以下的編碼放於<body></body>之內

<body onload="javascript:pageonload()">
<script language="JavaScript">
<!--
var message="*^_^*"; //請在這兒輸入你想入的文字
var x,y;
var step=12;
var flag=0;

message=message.split("");
var xpos=new Array();
for (i=0;i<=message.length-1;i++) {
xpos[i]=-50;
}

var ypos=new Array();
for (i=0;i<=message.length-1;i++) {
ypos[i]=-50;
}

function handlerMM(e) {
x = (document.layers) ? e.pageX : document.body.scrollLeft+event.clientX+20;
y = (document.layers) ? e.pageY : document.body.scrollTop+event.clientY;
flag=1;
}

function makesnake() {
if (flag==1 && document.all) {
for (i=message.length-1; i>=1; i--) {
xpos[i]=xpos[i-1]+step;
ypos[i]=ypos[i-1];
}
xpos[0]=x+step;
ypos[0]=y;

for (i=0; i<=message.length-1; i++) {
var thisspan = eval("span"+(i)+".style");
thisspan.posLeft=xpos[i];
thisspan.posTop=ypos[i];
thisspan.color=Math.random() * 255 * 255 * 255 + Math.random() * 255 * 255 + Math.random() * 255;
}
}
else if (flag==1 && document.layers) {
for (i=message.length-1; i>=1; i--) {
xpos[i]=xpos[i-1]+step;
ypos[i]=ypos[i-1];
}
xpos[0]=x+step;
ypos[0]=y;

for (i=0; i<message.length-1; i++) {
var thisspan = eval("document.span"+i);
thisspan.left=xpos[i];
thisspan.top=ypos[i];
thisspan.color=Math.random() * 255 * 255 * 255 + Math.random() * 255 * 255 + Math.random() * 255;
}}}

for (i=0;i<=message.length-1;i++) {
document.write("<span id='span"+i+"' class='spanstyle'>");
document.write(message[i]);
document.write("</span>");
}
if (document.layers) {
document.captureEvents(Event.MOUSEMOVE);
}
document.onmousemove = handlerMM;

function pageonload() {
makesnake();
window.setTimeout("pageonload();", 2);
}
// -->
</script>
</body>