让你网站下雪，超简单版本

[石__头]

演示在这里 http://adminbus.com/snow.html

把代码加到网页，OK
代码:
<style type="text/css">
.drop { position: absolute; width: 3; filter: flipV(), flipH(); font-size: 40; color: blue }
.STYLE2 {
font-size: 18;
font-weight: bold;
color: #00FFFF;
font-family: "宋体";
}
</style>
<script language="javascript">
snow = true;
snowsym = " * "
rainsym = " ' "
howmany = 25
if(snow){sym = snowsym; speed=1; angle=10; drops=howmany}
else{sym = rainsym; speed=50; drops=howmany; angle=6}
movex = -speed/angle; movey = speed; count = 0;

function moverain(){
for(move = 0; move < drops; move++){
xx[move]+=movex; yy[move]+=mv[move];
hmm = Math.round(Math.random()*1);
if(xx[move] < 0){xx[move] = maxx+10;}
字串3

if(yy[move] > maxy){yy[move] = 10;}
drop[move].left = xx[move]
drop[move].top = yy[move]+document.body.scrollTop;
}setTimeout('moverain()','1')}
//-->
</script>
<script language="javascript">
<!--
if (document.all){
drop = new Array(); xx = new Array(); yy = new Array(); mv = new Array()
ly = "document.all[\'"; st = "\'].style"
for(make = 0; make < drops; make++){
document.write('<div id="drop'+make+'" class=drop>'+sym+'</div>');
drop[make] = eval(ly+'drop'+make+st);
maxx = document.body.clientWidth-40
maxy = document.body.clientHeight-40
xx[make] = Math.random()*maxx;
yy[make] = -100-Math.random()*maxy;
drop[make].left = xx[make]
drop[make].top = yy[make]
mv[make] = (Math.random()*5)+speed/4;
drop[make].fontSize = (Math.random()*10)+20;
//*Change (col = 'white) to (col =YOUR COLOR)*//
if(snow){col = 'white'}else{col = 'blue'} 字串8
drop[make].color = col;
}
window.onload=moverain
}
//-->
</script>

本文来自: 站长巴士站(www.adminbus.com) 详细出处参考：http://adminbus.com/html/webbiz/3/20080123/37.html

[muhezi.com]

华丽，但不实用

[cf107]

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