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<!-- http://www.webjx.com -->
<!-- bbs http://bbs.webjx.com -->
<!--要完成此效果需要两个步骤
第一步：把如下代码加入到<head>区域中-->
<SCRIPT LANGUAGE="JavaScript1.2">
var intervals=2000
var sparksOn = true;
var speed = 40;
var power = 3;
var documentWidth=documentHeight=randomx=randomy=leftcorner=topcorner=0
var ns=(document.layers);
var ie=(document.all);
var ns6=(document.getElementById&&!document.all);
var sparksAflyin = false;
var allDivs = new Array(10);
var totalSparks = 0;
function initAll(){
if(!ns && !ie &&!ns6){
sparksOn = false;
return;
}
setInterval("firework()",intervals)
if (ns)
document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE);
for(dNum=0; dNum<7; ++dNum){
if(ie)
allDivs[dNum]=eval('document.all.sDiv'+dNum+'.style');
else if (ns6)
allDivs[dNum]=document.getElementById('sDiv'+dNum).style;
else
allDivs[dNum]=eval('document.layers["sDiv'+dNum+'"]');
}
}
function firework(){
//below code detects the browser dimenions
if (ie){
documentWidth=document.body.clientWidth
documentHeight=document.body.clientHeight
leftcorner=document.body.scrollLeft
topcorner=document.body.scrollTop
}
else if (ns||ns6){
documentWidth=window.innerWidth
documentHeight=window.innerHeight
leftcorner=pageXOffset
topcorner=pageYOffset
}
//below code randomly generates a set of coordinates that fall within the dimension
randomx=leftcorner+Math.floor(Math.random()*documentWidth)
randomy=topcorner+Math.floor(Math.random()*documentHeight)
if(sparksOn){
if(!sparksAflyin){
sparksAflyin=true;
totalSparks=0;
for(var spark=0;spark<=6;spark++){
dx=Math.round(Math.random()*50);
dy=Math.round(Math.random()*50);
moveTo(spark,randomx,randomy,dx,dy);
}
}
}
}
function moveTo(i,tempx,tempy,dx,dy){
if(ie){
if(tempy+80>(document.body.offsetHeight+document.body.scrollTop))
tempy=document.body.offsetHeight+document.body.scrollTop-80;
if(tempx+80>(document.body.offsetWidth+document.body.scrollLeft))
tempx=document.body.offsetWidth+document.body.scrollLeft-80;
}
else if(ns6){
if(tempy+80>(window.innerHeight+pageYOffset))
tempy=window.innerHeight+pageYOffset-80;
if(tempx+80>(window.innerWidth+pageXOffset))
tempx=window.innerWidth+pageXOffset-80;
}
if(tempx>-50&&tempy>-50){
tempx+=dx;tempy+=dy;
allDivs[i].left=tempx;
allDivs[i].top=tempy;
dx-=power;dy-=power;
setTimeout("moveTo("+i+","+tempx+","+tempy+","+dx+","+dy+")",speed)
}
else
++totalSparks
if(totalSparks==7){
sparksAflyin=false;
totalSparks=0;
}
}
window.onload=initAll
</script>
<style>
#sDiv0 {position:absolute; height:1; width:1; font-family:arial black; font-size:15px; color:Aqua; z-index:9;}
#sDiv1 {position:absolute; height:1; width:1; font-family:arial black; font-size:15px; color:red; z-index:10;}
#sDiv2 {position:absolute; height:1; width:1; font-family:arial black; font-size:15px; color:blue; z-index:11;}
#sDiv3 {position:absolute; height:1; width:1; font-family:arial black; font-size:15px; color:orange; z-index:12;}
#sDiv4 {position:absolute; height:1; width:1; font-family:arial black; font-size:15px; color:yellow; z-index:13;}
#sDiv5 {position:absolute; height:1; width:1; font-family:arial black; font-size:15px; color:lightgreen; z-index:14;}
#sDiv6 {position:absolute; height:1; width:1; font-family:arial black; font-size:15px; color:silver; z-index:15;}
</style>
<!--第二步：把如下代码加入到<body>区域中-->
<div id="sDiv0">*</div>
<div id="sDiv1">*</div>
<div id="sDiv2">*</div>
<div id="sDiv3">*</div>
<div id="sDiv4">*</div>
<div id="sDiv5">*</div>
<div id="sDiv6">*</div>
[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]
