JS特效 下雪

JS特效 下雪

<!--下雪-->
<style type="text/css">
<!--
.drop {
FONT-SIZE: 40px; FILTER: flipV(), flipH(); WIDTH: 3px; COLOR: blue; POSITION: absolute
}
-->
</style>
<SCRIPT src="http://www.toto369.net/bjtx/13/rain.js">
</SCRIPT>
<SCRIPT src="http://www.toto369.net/bjtx/13/rain2.js">
</SCRIPT>

rain.js文件如下
snow = true;    // false-rain;   true-snow
snowsym = " * " 
rainsym = " 乫 " 
howmany = 10    

if(snow){sym = snowsym; speed=1; angle=10; drops=howmany}
else{sym = rainsym; speed=25; 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;}
if(yy[move] > maxy){yy[move] = 10;}
drop[move].left = xx[move]
drop[move].top = yy[move]+document.body.scrollTop;
}setTimeout('moverain()','1')}

rain2.js文件如下
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;
if(snow){col = 'fuchsia'}else{col = 'fuchsia'}
drop[make].color = col;
}
window.onload=moverain
}