/******************************************
* Snow Effect Script- By Altan d.o.o. (http://www.altan.hr/snow/index.html)
* Visit Dynamic Drive DHTML code library (http://www.dynamicdrive.com/) for full source code
* Last updated Nov 9th, 05' by DD. This notice must stay intact for use
******************************************/

// Anzahl der gleichzeitig angezeigten Schneeflocken
var no = 10;
// Configure whether snow should disappear after x seconds (0=never):
var hidesnowtime = 0;
// Configure how much snow should drop down before fading ("windowheight" or "pageheight")
var snowdistance = "pageheight";
// Anzahl der unterschiedlichen Schneeflocken
var snowvariations = 5;

///////////Stop Config//////////////////////////////////

var ie4up = (document.all) ? 1 : 0;
var ns6up = (document.getElementById&&!document.all) ? 1 : 0;

function iecompattest(){
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

var dx, xp, yp;    // coordinate and position variables
var am, stx, sty;  // amplitude and step variables
var i, doc_width = 1024, doc_height = 2000; 
  
if (ns6up) {
	doc_width = self.innerWidth;
	doc_height = self.innerHeight;
}
else if (ie4up) {
	doc_width = iecompattest().clientWidth;
	doc_height = iecompattest().clientHeight;
}

dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();

for (i = 0; i < no; ++ i) { 
	var snownumber = 0;
	snownumber = Math.random();
	snownumber *= snowvariations;
	snownumber = Math.ceil(snownumber);

	//Configure below to change URL path to the snow image
  
	var snowsrc = "images/snow/snow"+snownumber+".gif";

	snowsrc = (snowsrc.indexOf("dynamicdrive.com")!=-1)? "snow.gif" : snowsrc

	dx[i] = 0;				// set coordinate variables
	xp[i] = Math.random()*(doc_width-50);	// set position variables
	yp[i] = Math.random()*doc_height;
	am[i] = Math.random()*20;		// set amplitude variables
	stx[i] = 0.02 + Math.random()/10;	// set step variables
	sty[i] = 0.7 + Math.random();		// set step variables

	if (ie4up||ns6up) {
		if (i == 0) {
			document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><a href=\"http://dynamicdrive.com\"><img src='"+snowsrc+"' border=\"0\"><\/a><\/div>");
		}
		else {
			document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"><\/div>");
		}
	}
}

function snowIE_NS6() {  // IE and NS6 main animation function
	doc_width = ns6up?window.innerWidth-10 : iecompattest().clientWidth-10;
	doc_height=(window.innerHeight && snowdistance=="windowheight")? window.innerHeight : (ie4up && snowdistance=="windowheight")?  iecompattest().clientHeight : (ie4up && !window.opera && snowdistance=="pageheight")? iecompattest().scrollHeight : iecompattest().offsetHeight;

	for (i = 0; i < no; ++ i) {		// iterate for every dot
		yp[i] += sty[i];
		if (yp[i] > doc_height-50) {
			xp[i] = Math.random()*(doc_width-am[i]-30);
			yp[i] = 0;
			stx[i] = 0.02 + Math.random()/10;
			sty[i] = 0.7 + Math.random();
		}
		dx[i] += stx[i];
		document.getElementById("dot"+i).style.top=yp[i]+"px";
		document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i])+"px";  
	}
	snowtimer=setTimeout("snowIE_NS6()", 10);
}

function hidesnow() {
	if (window.snowtimer) clearTimeout(snowtimer);
	for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="hidden";
}

if (ie4up||ns6up) {

	snowIE_NS6();
	if (hidesnowtime > 0) {
		setTimeout("hidesnow()", hidesnowtime*1000)
	}
}