代碼: 選擇全部
<!-- Snow Script by kurt.grigg@virgin.net, slightly modifyed by Niels Chr. R鴇 (dec 2003) for better performance
Y = new Array();
X = new Array();
S = new Array();
A = new Array();
B = new Array();
M = new Array();
V = (document.layers)?1:0;
iH=(V)?window.innerHeight:window.document.body.clientHeight;
iW=(V)?window.innerWidth:window.document.body.clientWidth;
N = Math.round(iH*iW/28000)+1; //Number of snow balls, initially 40
for (i=0; i < N; i++)
{
Y[i]=Math.round(Math.random()*iH); //initial Y placement
X[i]=Math.round(Math.random()*iW); //initial X placement
S[i]=Math.round(Math.random()*3+2); //Speed of snow, initially as 5+2
A[i]=0;
B[i]=Math.random()*0.1+0.1;
M[i]=Math.round(Math.random()*2+1); //Size of snow ball, initially at 1+1
}
if (V)
{
for (i = 0; i < N; i++)
{document.write("<LAYER NAME='sn"+i+"' LEFT=0 TOP=0 BGCOLOR='#FAFAF0' 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:#FAFAF0;font-size:'+M[i]+'"></div>')}
document.write('</div></div>');
}
function snow(){
var H=(V)?window.innerHeight:window.document.body.clientHeight;
var W=(V)?window.innerWidth:window.document.body.clientWidth;
var T=(V)?window.pageYOffset:document.body.scrollTop;
var L=(V)?window.pageXOffset:document.body.scrollLeft;
for (i=0; i < N; i++)
{
Y[i]+=S[i];
X[i]+=S[i]*Math.cos(A[i]);
if (Y[i] > H)
{
Y[i]=-10;
var ran = Math.random();
X[i]=Math.round(ran*W);
}
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()',40+N); //timeout initially 10
}
还有那个雪花的图片是怎么通过这个js调用的
麻烦大家看看，谢谢了
