变换飞舞的图片

下面为效果显示

脚本说明:
第一步：把如下代码加入<body>区域中
<script language="JavaScript">
<!-- Naughty Windows Script by kurt.grigg@virgin.net

pics=new Array('img.gif','inindent.gif','italic.gif','numlist.gif','paste.gif','redo.gif','under.gif')
load=new Array();
function PreLoad(){
for(i=0; i < pics.length; i++)
 {
 load[i]=new Image();
 load[i].src=pics[i];
 }
}
PreLoad();
BY=-22;          
BX=-17;                    
NS4=(document.layers);
NS6=(document.getElementById&&!document.all);
IE4=(document.all);
L=null;
if (NS4){
document.write("<LAYER NAME='netscape' LEFT=0 TOP=0><img name='n' src="+load[0].src+"></LAYER>");
}
if (NS6){
document.write("<img id='n6' src='"+load[0].src+"' style='position:absolute;top:0px;left:0px'>");
}
if (IE4){
document.write("<div style='position:absolute;top:0px;left:0px'><div style='position:relative'>");
document.write("<img id='explorer' src='"+load[0].src+"' style='position:absolute;top:0px;left:0px'>");
document.write("</div></div>")
}
R=0,PB=0,RD=0,Y=0,X=0,D=0,VB=0,HB=0;
Y=10;X=10;D=Math.floor(Math.random()*60+10);
function Curve(){
plusMinus=new Array(1,-1,2,-2,3,-3,0,1,-1)
R=Math.floor(Math.random()*plusMinus.length);
RD=plusMinus[R];
setTimeout('Curve()',1800);
}
function MoveRandom(){
setTimeout('MoveRandom()',10);
var H=(NS6||NS4)?window.innerHeight:document.body.clientHeight;
var W=(NS6||NS4)?window.innerWidth:document.body.clientWidth;
var YS=(NS6||NS4)?window.pageYOffset:document.body.scrollTop;
var XS=(NS6||NS4)?window.pageXOffset:document.body.scrollLeft;
PB=D+=RD;
y = 3*Math.sin(PB*Math.PI/180);
x = 3*Math.cos(PB*Math.PI/180);
if (D < 0) D+=360;
Y+=y;
X+=x;
VB=180-D;
HB=0-D;
if ((Y < 1) && (X < 1)) {Y=1;X=1;D=45;}
if ((Y < 1) && (X > W+BX)) {Y=1;X=W+BX;D=135;}
if ((Y > H+BY) && (X < 1)) {Y=H+BY;X=1;D=315;}
if ((Y > H+BY) && (X > W+BX)) {Y=H+BY;X=W+BX;D=225;}
if (Y < 1) {Y=1;D=HB;}  
if (Y > H+BY) {Y=H+BY;D=HB;}  
if (X < 1) {X=1;D=VB;} 
if (X > W+BX) {X=W+BX;D=VB;} 
if (NS4)L=document.netscape;
if (NS6)L=document.getElementById("n6").style;
if (IE4)L=explorer.style;
L.top=Y+YS;
L.left=X+XS;
}
count=0;
move=1;
function picSwap(){
if (count >= pics.length)count=0;
if (NS4)
document.layers['netscape'].document.images['n'].src=pics[count];
if (NS6)
document.getElementById("n6").src=pics[count];
if (IE4)
explorer.src=pics[count];
count+=move;
setTimeout('picSwap()',2500);
}
function sTaRt(){Curve();MoveRandom();picSwap()}
window.onload=sTaRt;
//-->
</script>

第二步：把<body>中的内容改为：
<body  onLoad="sTaRt()">