117、漫天飞雪

117、漫天飞雪

脚本说明:

第一步:把如下代码加入<body>区域中

<script language="JavaScript">

<!--

N = 40;

Y = new Array();

X = new Array();

S = new Array();

A = new Array();

B = new Array();

M = new Array();

V = (document.layers)?1:0;

 

iH=(document.layers)?window.innerHeight:window.document.body.clientHeight;

iW=(document.layers)?window.innerWidth:window.document.body.clientWidth;

for (i=0; i < N; i++){                                                               

 Y[i]=Math.round(Math.random()*iH);

 X[i]=Math.round(Math.random()*iW);

 S[i]=Math.round(Math.random()*5+2);

 A[i]=0;

 B[i]=Math.random()*0.1+0.1;

 M[i]=Math.round(Math.random()*1+1);

}

if (V){

for (i = 0; i < N; i++)

{document.write("<LAYER NAME='sn"+i+"' LEFT=0 TOP=0 BGCOLOR='#FFFFF0' CLIP='0,0,"+M[i]+","+M[i]+"'></LAYER>")}

}

else{

document.write('<div style="position:absolute;top:0px;left:0px">');

document.write('<div style="position:relative">');

for (i = 0; i < N; i++)

{document.write('<div id="si" style="position:absolute;top:0;left:0;width:'+M[i]+';height:'+M[i]+';background:#fffff0;font-size:'+M[i]+'"></div>')}

document.write('</div></div>');

}

function snow(){

var H=(document.layers)?window.innerHeight:window.document.body.clientHeight;

var W=(document.layers)?window.innerWidth:window.document.body.clientWidth;

var T=(document.layers)?window.pageYOffset:document.body.scrollTop;

var L=(document.layers)?window.pageXOffset:document.body.scrollLeft;

for (i=0; i < N; i++){

sy=S[i]*Math.sin(90*Math.PI/180);

sx=S[i]*Math.cos(A[i]);

Y[i]+=sy;

X[i]+=sx;

if (Y[i] > H){

Y[i]=-10;

X[i]=Math.round(Math.random()*W);

M[i]=Math.round(Math.random()*1+1);

S[i]=Math.round(Math.random()*5+2);

}

if (V){document.layers['sn'+i].left=X[i];document.layers['sn'+i].top=Y[i]+T}

else{si[i].style.pixelLeft=X[i];si[i].style.pixelTop=Y[i]+T}

A[i]+=B[i];

}

setTimeout('snow()',10);

}

//-->

</script>

 

 

第二步:把<body>中的内容改为:

<body bgcolor=#000000" onLoad="snow()">

 

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