// JavaScript Document

var x,y
var step=20
var flag=0
var message=" 为健康加油，我们一诺千金！"
message=message.split("")
var xpos=new Array()

for (i=0;i<=message.length;i++) {
xpos[i]=-50
}

var ypos=new Array()

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

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

function makesnake() {
if (flag==1 && document.all) {
for (i=message.length; 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; i++) {
var thisspan = eval("span"+(i)+".style")
thisspan.posLeft=xpos[i]
thisspan.posTop=ypos[i]
}
}

else if (flag==1 && document.layers) {
for (i=message.length; 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; i++) {
var thisspan = eval("document.span"+i)
thisspan.left=xpos[i]
thisspan.top=ypos[i]
}
}

var timer=setTimeout("makesnake()",30)
}

for (i=0;i<=message.length;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;