/******************************************
* 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
******************************************/

//Configure below to change URL path to the snow image
var snowsrc = "snow.gif"
// Configure below to change number of snow to render
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";

///////////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 = 800, doc_height = 600;

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();
snowsrc = (snowsrc.indexOf("dynamicdrive.com") != -1) ? "snow.gif" : snowsrc
for (i = 0; i < no; ++i) {
    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)
}