Faire tomber
la pluie sur votre site ? Pas besoin d'une danse sioux
pour cela, un JavaScript suffit. Insérez ce script
juste après la balise <body> de votre page
:
<SCRIPT LANGUAGE="JavaScript">
var no = 50;
var speed = 1;
var ns4up = (document.layers) ? 1 : 0;
var ie4up = (document.all) ? 1 : 0;
var s, x, y, sn, cs;
var a, r, cx, cy;
var i, doc_width = 800, doc_height = 600;
function initRain() {
a = 6;
r[i] = 1;
sn = Math.sin(a);
cs = Math.cos(a);
cx[i] = Math.random() * doc_width + 1;
cy[i] = Math.random() * doc_height + 1;
x[i] = r[i] * sn + cx[i];
y[i] = cy[i];
}
function makeRain() {
r[i] = 1;
cx[i] = Math.random() * doc_width + 1;
cy[i] = 1;
x[i] = r[i] * sn + cx[i];
y[i] = r[i] * cs + cy[i];
}
function updateRain()
{
r[i] += s;
x[i] = r[i] * sn + cx[i];
y[i] = r[i] * cs + cy[i];
}
function raindropNS()
{
for (i = 0; i < no; ++ i) {
updateRain();
if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) ||
(y[i] >= (doc_height - 20))) {
makeRain();
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
document.layers["dot"+i].top = y[i];
document.layers["dot"+i].left = x[i];
}
setTimeout("raindropNS()", speed);
}
function raindropIE()
{
for (i = 0; i < no; ++ i) {
updateRain();
if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) ||
(y[i] >= (doc_height - 20))) {
makeRain();
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
document.all["dot"+i].style.pixelTop = y[i];
document.all["dot"+i].style.pixelLeft = x[i];
}
setTimeout("raindropIE()", speed);
}
if (ns4up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
else if (ie4up) {
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
x = new Array();
y = new Array();
r = new Array();
cx = new Array();
cy = new Array();
s = 8;
for (i = 0; i < no;
++ i) {
initRain();
if (ns4up) {
if (i == 0) {
document.write("<layer name='dot"+i+"'
left='1' top='1' visibility='show'><font color='blue'>,</font></layer>");
}
else {
document.write("<layer name='dot"+i+"'
left='1' top='1' visibility='show'><font color='blue'>,</font></layer>");
}
}
else if (ie4up) {
if (i == 0) {
document.write("<div id='dot"+i+"' style='POSITION:
absolute; Z-INDEX: "+i+"; VISIBILITY: visible;
TOP: 15px; LEFT: 15px;'><font color='blue'>,</font></div>");
}
else {
document.write("<div id='dot"+i+"' style='POSITION:
absolute; Z-INDEX: "+i+"; VISIBILITY: visible;
TOP: 15px; LEFT: 15px;'><font color='blue'>,</font></div>");
}
}
}
if (ns4up) {
raindropNS();
}
else if (ie4up) {
raindropIE();
}
// End -->
</SCRIPT>
Précisez le nombre
de gouttes de pluie que vous souhaitez voir tomber sur
votre site (var no = 50;) et la vitesse de celles-ci (var
speed = 1;)
De
la pluie sur votre site