自由移动的多幅图片_图形特效

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文章标题：　　自由移动的多幅图片

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┆ 来源：网络 ┆ 作者：admin ┆ 发表时间：2008-4-30

<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>网页特效|eZhannet.com/Js|---　自由移动的多幅图片</title>
</head>

load = new Array()
for(i=0; i < Pic.length; i++)
 {
 load[i] = new Image();
 load[i].src = Pic[i];
 }
amount=Pic.length; 
ns=(document.layers)?1:0;
if (ns){
for (i=0; i < amount; i++){
document.write("<LAYER NAME='netscape"+i+"' LEFT=0 TOP=0><img name='netpics' src="+load[i].src+"></LAYER>")}
}
else{
document.write("<div style='position:absolute;top:0px;left:0px'><div style='position:relative'>");
for (i=0; i < amount; i++){
document.write("<img id='explorer' src='"+load[i].src+"' style='position:absolute;top:0px;left:0px'>")}
document.write("</div></div>")
}
VB=0;
HB=0;
R=new Array();
PB=new Array();
RD=new Array();
Y=new Array();
X=new Array();
D=new Array();
SP=new Array();
BY=new Array();
BX=new Array();
for (i=0; i < amount; i++){
 Y[i]=10;
 X[i]=10;
 D[i]=Math.floor(Math.random()*70+10);
 SP[i]=Math.floor(Math.random()*MaxSpeed+MinSpeed);
}
function Curve(){
plusMinus=new Array(1,-1,2,-2,3,-3,0,1,-1,0,5,-5)
for (i=0; i < amount; i++){
R[i]=Math.floor(Math.random()*plusMinus.length);
RD[i]=plusMinus[R[i]];
}
setTimeout('Curve()',1500);
}
function MoveRandom(){
var H=(document.layers)?window.innerHeight:document.body.clientHeight;
var W=(document.layers)?window.innerWidth:document.body.clientWidth;
var YS=(document.layers)?window.pageYOffset:document.body.scrollTop;
var XS=(document.layers)?window.pageXOffset:document.body.scrollLeft;

for (i=0; i < amount; i++){
BY[i]=-load[i].height;
BX[i]=-load[i].width;
PB[i]=D[i]+=RD[i];
y = SP[i]*Math.sin(PB[i]*Math.PI/180);
x = SP[i]*Math.cos(PB[i]*Math.PI/180);
if (D[i] < 0) D[i]+=360;
Y[i]+=y;
X[i]+=x;
VB=180-D[i];
HB=0-D[i];
//Corner rebounds! not necessary but looks nice.
if ((Y[i] < 1) && (X[i] < 1)) {Y[i]=1;X[i]=1;D[i]=45;}
if ((Y[i] < 1) && (X[i] > W+BX[i])) {Y[i]=1;X[i]=W+BX[i];D[i]=135;}
if ((Y[i] > H+BY[i]) && (X[i] < 1)) {Y[i]=H+BY[i];X[i]=1;D[i]=315;}
if ((Y[i] > H+BY[i]) && (X[i] > W+BX[i])) {Y[i]=H+BY[i];X[i]=W+BX[i];D[i]=225;}
//Edge rebounds!
if (Y[i] < 1) {Y[i]=1;D[i]=HB;}  
if (Y[i] > H+BY[i]) {Y[i]=H+BY[i];D[i]=HB;}  
if (X[i] < 1) {X[i]=1;D[i]=VB;} 
if (X[i] > W+BX[i]) {X[i]=W+BX[i];D[i]=VB;} 
var layer=(document.layers)?document.layers['netscape'+i]:explorer[i].style;
layer.top=Y[i]+YS;
layer.left=X[i]+XS;
}
setTimeout('MoveRandom()',10);
}
function sTaRt(){Curve();MoveRandom()}
//-->
</script>

</body>

</html>

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