发信人: jaspon(BrightMing) 
整理人: morefeetin(2001-05-10 08:15:30), 站内信件
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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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