Codigo HTML efecto nieve
CODIGO HTML EFECTO NIEVE:Podés cambiar la imagen reemplazando por una tuya alojada en el servidor poniendo su nombre donde está en rojo.
<script>
var no = 5; // snow number
var speed = 15; // smaller number moves the snow faster
var snowflake = "snow.gif";
var ns4up = (document.layers) ? 1 : 0; // browser sniffer
var ie4up = (document.all) ? 1 : 0;
var dx, xp, yp; // coordinate and position variables
var am, stx, sty; // amplitude and step variables
var i, doc_width = 400, doc_height = 500;
if (ns4up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
} else if (ie4up) {
doc_width = 500;
doc_height = 500;
}
dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();
for (i = 0; i < no; ++ i) {
dx = 0; // set coordinate variables
xp = Math.random()*(doc_width-50); // set position variables
yp = Math.random()*doc_height;
am = Math.random()*20; // set amplitude variables
stx = 0.02 + Math.random()/10; // set step variables
sty = 0.7 + Math.random(); // set step variables
if (ns4up) { // set layers
if (i == 0) {
document.write("<layer name="dot"+ i +"" left="15" ");
document.write("top="15" visibility="show"><img src="");
document.write(snowflake + "" border="0"></layer>");
} else {
document.write("<layer name="dot"+ i +"" left="15" ");
document.write("top="15" visibility="show"><img src="");
document.write(snowflake + "" 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="");
document.write(snowflake + "" 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="");
document.write(snowflake + "" border="0"></div>");
}
}
}
function snowNS() { // Netscape main animation function
for (i = 0; i < no; ++ i) { // iterate for every dot
yp += sty;
if (yp > doc_height-50) {
xp = Math.random()*(doc_width-am-30);
yp = 0;
stx = 0.02 + Math.random()/10;
sty = 0.7 + Math.random();
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
dx += stx;
document.layers["dot"+i].top = yp;
document.layers["dot"+i].left = xp + am*Math.sin(dx);
}
setTimeout("snowNS()", speed);
}
function snowIE() { // IE main animation function
for (i = 0; i < no; ++ i) { // iterate for every dot
yp += sty;
if (yp > doc_height-50) {
xp = Math.random()*(doc_width-am-30);
yp = 0;
stx = 0.02 + Math.random()/10;
sty = 0.7 + Math.random();
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
dx += stx;
document.all["dot"+i].style.pixelTop = yp;
document.all["dot"+i].style.pixelLeft = xp + am*Math.sin(dx);
}
setTimeout("snowIE()", speed);
}
if (ns4up) {
snowNS();
} else if (ie4up) {
snowIE();
}
</script>