漫天飞雪_图片特效特效

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漫天飞雪,您可以先修改部分代码再运行.

<html>

<head>

<body>

<SCRIPT LANGUAGE="JavaScript1.2">
<!--
var no = 12;
var speed = 10;
var heart = "http://code.helpor.net/picture/snow.gif";
var flag;
var ns4up = (document.layers) ? 1 : 0;
var ie4up = (document.all) ? 1 : 0;

var dx, xp, yp;
var am, stx, sty;
var i, doc_width = 800, doc_height = 600;
if (ns4up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
} else if (ie4up) {
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
dx = new Array();
xp = new Array();
yp = new Array();
amx = new Array();
amy = new Array();
stx = new Array();
sty = new Array();
flag = new Array();
for (i = 0; i < no; ++ i) {
dx[i] = 0; // set coordinate variables
xp[i] = Math.random()*(doc_width-30)+10;
yp[i] = Math.random()*doc_height;
amy[i] = 12+ Math.random()*20;
amx[i] = 10+ Math.random()*40;
stx[i] = 0.02 + Math.random()/10;
sty[i] = 0.7 + Math.random();
flag[i] = (Math.random()>0.5)?1:0;
if (ns4up) { // set layers
if (i == 0) {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
document.write("top=\"15\" visibility=\"show\"><img src=http://p1.mb5u.com/texiao/1/2011022516042128.write(heart+ "\" border=\"0\"></layer>");
} else {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
document.write("top=\"15\" visibility=\"show\"><img src=http://p1.mb5u.com/texiao/1/2011022516042128.write(heart+ "\" border=\"0\"></layer>");
}
} else
if (ie4up) {
if (i == 0) {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
document.write("visible; TOP: 15px; LEFT: 15px;\"><img src=http://p1.mb5u.com/texiao/1/2011022516042128.write(heart+ "\" border=\"0\"></div>");
} else {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
document.write("visible; TOP: 15px; LEFT: 15px;\"><img src=http://p1.mb5u.com/texiao/1/2011022516042128.write(heart+ "\" border=\"0\"></div>");
}
}
}

function helpor_net() {
for (i = 0; i < no; ++ i) {
if (yp[i] > doc_height-50) {
xp[i] = 10+ Math.random()*(doc_width-amx[i]-30);
yp[i] = 0;
flag[i]=(Math.random()<0.5)?1:0;
stx[i] = 0.02 + Math.random()/10;
sty[i] = 0.7 + Math.random();
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
if (flag[i])
dx[i] += stx[i];
else
dx[i] -= stx[i];
if (Math.abs(dx[i]) > Math.PI) {
yp[i]+=Math.abs(amy[i]*dx[i]);
xp[i]+=amx[i]*dx[i];
dx[i]=0;
flag[i]=!flag[i];
}
document.layers["dot"+i].top = yp[i] + amy[i]*(Math.abs(Math.sin(dx[i])+dx[i]));
document.layers["dot"+i].left = xp[i] + amx[i]*dx[i];

}
setTimeout("helpor_net()", speed);
}

function www_helpor_net() {
for (i = 0; i < no; ++ i) {
if (yp[i] > doc_height-50) {
xp[i] = 10+ Math.random()*(doc_width-amx[i]-30);
yp[i] = 0;
stx[i] = 0.02 + Math.random()/10;
sty[i] = 0.7 + Math.random();
flag[i]=(Math.random()<0.5)?1:0;
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
if (flag[i])
dx[i] += stx[i];
else
dx[i] -= stx[i];
if (Math.abs(dx[i]) > Math.PI) {
yp[i]+=Math.abs(amy[i]*dx[i]);
xp[i]+=amx[i]*dx[i];
dx[i]=0;
flag[i]=!flag[i];
}

document.all["dot"+i].style.pixelTop = yp[i] + amy[i]*(Math.abs(Math.sin(dx[i])+dx[i]));
document.all["dot"+i].style.pixelLeft = xp[i] + amx[i]*dx[i];
}
setTimeout("www_helpor_net()", speed);
}

if (ns4up) {
helpor_net();
} else if (ie4up) {
www_helpor_net();
}
//-->
</script>
      </body>

</html>

所属频道：图片特效特效/更新时间：2012-10-31

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