//// Configuration part
var num_flakes = 15; // The number of snowflakes
var intervall = 50; // the intervall the snowflakes are updated
var imgurl = "JS/snow.gif"; // image filename
var imgsize = 50; // no need to be exact
//// Browser Detection
var browser_dom = (document.getElementById) ? true : false;
var browser_ns4 = (document.layers) ? true : false;
var browser_ie = (document.all) ? true : false;
var document_width = 760, document_height=540;
if (browser_ie) {
document_width = document.body.clientWidth;
document_height = document.body.clientHeight;
} else if (browser_dom || browser_ns4) {
document_width = self.innerWidth;
document_height = self.innerHeight;
}
var pos_x = new Array();
var pos_y = new Array();
var drift_x = new Array();
var speed_y = new Array();
for (i = 0; i < num_flakes; ++ i) {
pos_x[i] = Math.random() * (document_width - imgsize);
pos_y[i] = Math.random() * (document_height - imgsize);
drift_x[i] = Math.random()/2 - .25;
speed_y[i] = 2 + Math.random()*2;
if (browser_dom || browser_ie) {
document.write('' +
'
