文字从天而降
  说明: 文字从页面顶部掉下来 
  代码：
<p www_helpor_net="dropWord" style="position: relative !important; left: 10000 !important" align="center"><font size="3" color="#ee00FF">哇! 有 没 有 吓 着 你 啊 ?</font><font size="7" face="Arial" color="#FF0000"><b>YES!</b></font></p>

<SCRIPT language="JavaScript">
<!--
dynamicanimAttr = "www_helpor_net"
animateElements = new Array()
currentElement = 0
speed = 0
stepsZoom = 8
stepsWord = 8
stepsFly = 12
stepsSpiral = 16
steps = stepsZoom
step = 0
outString = ""
function helpor_net()
{
var ms = navigator.appVersion.indexOf("MSIE")
ie4 = (ms>0) && (parseInt(navigator.appVersion.substring(ms+5, ms+6)) >= 4)
if(!ie4)
{
if((navigator.appName == "Netscape") &&
(parseInt(navigator.appVersion.substring(0, 1)) >= 4))
{
for (index=document.layers.length-1; index >= 0; index--)
{
layer=document.layers[index]
if (layer.left==10000)
layer.left=0
}
}
return
}
for (index=document.all.length-1; index >= document.body.sourceIndex; index--)
{
el = document.all[index]
animation = el.getAttribute(dynamicanimAttr, false)
if(null != animation)
{
if(animation == "dropWord" || animation == "flyTopRightWord" || animation == "flyBottomRightWord")
{
ih = el.innerHTML
outString = ""
i1 = 0
iend = ih.length
while(true)
{
i2 = startWord(ih, i1)
if(i2 == -1)
i2 = iend
outWord(ih, i1, i2, false, "")
if(i2 == iend)
break
i1 = i2
i2 = endWord(ih, i1)
if(i2 == -1)
i2 = iend
outWord(ih, i1, i2, true, animation)
if(i2 == iend)
break
i1 = i2
}
document.all[index].innerHTML = outString
document.all[index].style.posLeft = 0
document.all[index].setAttribute(dynamicanimAttr, null)
}
if(animation == "zoomIn" || animation == "zoomOut")
{
ih = el.innerHTML
outString = "<SPAN " + dynamicanimAttr + "=\"" + animation + "\" style=\"position: relative; left: 10000;\">"
outString += ih
outString += "</SPAN>"
document.all[index].innerHTML = outString
document.all[index].style.posLeft = 0
document.all[index].setAttribute(dynamicanimAttr, null)
}
}
}
i = 0
for (index=document.body.sourceIndex; index < document.all.length; index++)
{
el = document.all[index]
animation = el.getAttribute(dynamicanimAttr, false)
if (null != animation)
{
if(animation == "flyLeft")
{
el.style.posLeft = 10000-offsetLeft(el)-el.offsetWidth
el.style.posTop = 0
}
else if(animation == "flyRight")
{
el.style.posLeft = 10000-offsetLeft(el)+document.body.offsetWidth
el.style.posTop = 0
}
else if(animation == "flyTop" || animation == "dropWord")
{
el.style.posLeft = 0
el.style.posTop = document.body.scrollTop-offsetTop(el)-el.offsetHeight
}
else if(animation == "flyBottom")
{
el.style.posLeft = 0
el.style.posTop = document.body.scrollTop-offsetTop(el)+document.body.offsetHeight
}
else if(animation == "flyTopLeft")
{
el.style.posLeft = 10000-offsetLeft(el)-el.offsetWidth
el.style.posTop = document.body.scrollTop-offsetTop(el)-el.offsetHeight
}
else if(animation == "flyTopRight" || animation == "flyTopRightWord")
{
el.style.posLeft = 10000-offsetLeft(el)+document.body.offsetWidth
el.style.posTop = document.body.scrollTop-offsetTop(el)-el.offsetHeight
}
else if(animation == "flyBottomLeft")
{
el.style.posLeft = 10000-offsetLeft(el)-el.offsetWidth
el.style.posTop = document.body.scrollTop-offsetTop(el)+document.body.offsetHeight
}
else if(animation == "flyBottomRight" || animation == "flyBottomRightWord")
{
el.style.posLeft = 10000-offsetLeft(el)+document.body.offsetWidth
el.style.posTop = document.body.scrollTop-offsetTop(el)+document.body.offsetHeight
}
else if(animation == "spiral")
{
el.style.posLeft = 10000-offsetLeft(el)-el.offsetWidth
el.style.posTop = document.body.scrollTop-offsetTop(el)-el.offsetHeight
}
else if(animation == "zoomIn")
{
el.style.posLeft = 10000
el.style.posTop = 0
}
else if(animation == "zoomOut")
{
el.style.posLeft = 10000
el.style.posTop = 0
}
else
{
el.style.posLeft = 10000-offsetLeft(el)-el.offsetWidth
el.style.posTop = 0
}
el.initLeft = el.style.posLeft
el.initTop = el.style.posTop
animateElements[i++] = el
}
}
window.setTimeout("animate();", speed)
}
function offsetLeft(el)
{
x = el.offsetLeft
for (e = el.offsetParent; e; e = e.offsetParent)
x += e.offsetLeft;
return x
}
function offsetTop(el)
{
y = el.offsetTop
for (e = el.offsetParent; e; e = e.offsetParent)
y += e.offsetTop;
return y
}
function startWord(ih, i)
{
for(tag = false; i < ih.length; i++)
{
c = ih.charAt(i)
if(c == '<')
tag = true
if(!tag)
return i
if(c == '>')
tag = false
}
return -1
}
function endWord(ih, i)
{
nonSpace = false
space = false
while(i < ih.length)
{
c = ih.charAt(i)
if(c != ' ')
nonSpace = true
if(nonSpace && c == ' ')
space = true
if(c == '<')
return i
if(space && c != ' ')
return i
i++
}
return -1
}
function outWord(ih, i1, i2, dyn, anim)
{
if(dyn)
outString += "<SPAN " + dynamicanimAttr + "=\"" + anim + "\" style=\"position: relative; left: 10000;\">"
outString += ih.substring(i1, i2)
if(dyn)
outString += "</SPAN>"
}
function animate()
{
el = animateElements[currentElement]
animation = el.getAttribute(dynamicanimAttr, false)
step++
if(animation == "spiral")
{
steps = stepsSpiral
v = step/steps
rf = 1.0 - v
t = v * 2.0*Math.PI
rx = Math.max(Math.abs(el.initLeft), 200)
ry = Math.max(Math.abs(el.initTop), 200)
el.style.posLeft = Math.ceil(-rf*Math.cos(t)*rx)
el.style.posTop = Math.ceil(-rf*Math.sin(t)*ry)
}
else if(animation == "zoomIn")
{
steps = stepsZoom
el.style.fontSize = Math.ceil(50+50*step/steps) + "%"
el.style.posLeft = 0
}
else if(animation == "zoomOut")
{
steps = stepsZoom
el.style.fontSize = Math.ceil(100+200*(steps-step)/steps) + "%"
el.style.posLeft = 0
}
else
{
steps = stepsFly
if(animation == "dropWord" || animation == "flyTopRightWord" || animation == "flyBottomRightWord")
steps = stepsWord
dl = el.initLeft / steps
dt = el.initTop / steps
el.style.posLeft = el.style.posLeft - dl
el.style.posTop = el.style.posTop - dt
}
if (step >= steps)
{
el.style.posLeft = 0
el.style.posTop = 0
currentElement++
step = 0
}
if(currentElement < animateElements.length)
window.setTimeout("animate();", speed)
}
helpor_net()
//-->
</SCRIPT>