var speed = 110; // ñêîðîñòü ñíåæèíîê

var snowflake = Array();

    snowflake[1]="http://s-west.com.ua/images/snow/s1.png";
    snowflake[2]="http://s-west.com.ua/images/snow/s2.png";
    snowflake[3]="http://s-west.com.ua/images/snow/s3.png";
    snowflake[4]="http://s-west.com.ua/images/snow/s5.png";
    snowflake[5]="http://s-west.com.ua/images/snow/s6.png";
    snowflake[6]="http://s-west.com.ua/images/snow/s7.png";
    snowflake[7]="http://s-west.com.ua/images/snow/s8.png";

var sneg = snowflake.length-1;

var ns4up = 0;
var ie4up = 0;
var ff = 0;

if (document.layers) {ns4up = 1}
else if (document.all) {ie4up = 1}
else {ff = 1}

var dx, xp, yp; 
var am, stx, sty; 
var i, doc_width = 800, doc_height = 1900;

if (ns4up) {
    doc_width = self.innerWidth;
    doc_height = self.innerHeight;
}
else if (ie4up) {
    doc_width = document.body.clientWidth;
    doc_height = document.body.clientHeight;
}
else if (ff) {
    doc_width = window.innerWidth;
    doc_height = window.innerHeight;
}

if (ie4up && (doc_height < 300)) {doc_height = 300;}

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[i] = 0;         
    xp[i] = Math.random()*(doc_width-50); 
    yp[i] = Math.random()*doc_height;
    am[i] = Math.random()*20;         
    stx[i] = 0.02 + Math.random()/10; 
    sty[i] = 0.7 + Math.random();   
    
    if (ns4up) {                  
        if (i == 0) {
            document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
            document.write("top=\"15\" visibility=\"show\"><img class=tpl src=\"");
            //document.write(snowflake + "\" border=\"0\"></layer>");
            document.write(snowflake[Math.ceil(Math.random()*10*sneg/10)] + "\" border=\"0\"></layer>");
        }
        else {
            document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
            document.write("top=\"15\" visibility=\"show\"><img class=tpl src=\"");
            //document.write(snowflake + "\" border=\"0\"></layer>");
            document.write(snowflake[Math.ceil(Math.random()*10*sneg/10)] + "\" border=\"0\"></layer>");
        }
    }
    else if (ie4up) {
        if (i == 0) {
            document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
            document.write("absolute; Z-INDEX: "+ 10+i +"; display: ");
            document.write("block; TOP: 15px; LEFT: 15px;\"><img class=tpl src=\"");
            //document.write(snowflake + "\" border=\"0\"></div>");
            document.write(snowflake[Math.ceil(Math.random()*10*sneg/10)] + "\" border=\"0\"></div>");
        }
        else {
            document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
            document.write("absolute; Z-INDEX: "+ 10+i +"; display: ");
            document.write("block; TOP: 15px; LEFT: 15px;\"><img class=tpl src=\"");
            //document.write(snowflake + "\" border=\"0\"></div>");
            document.write(snowflake[Math.ceil(Math.random()*10*sneg/10)] + "\" border=\"0\"></div>");
        }
    }
    else if (ff) {
        if (i == 0) {
            document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
            document.write("absolute; Z-INDEX: "+ 10+i +"; display: ");
            document.write("block; TOP: 15px; LEFT: 15px;\"><img class=tpl src=\"");
            //document.write(snowflake + "\" border=\"0\"></div>");
            document.write(snowflake[Math.ceil(Math.random()*10*sneg/10)] + "\" border=\"0\"></div>");
        }
        else {
            document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
            document.write("absolute; Z-INDEX: "+ 10+i +"; display: ");
            document.write("block; TOP: 15px; LEFT: 15px;\"><img class=tpl src=\"");
            //document.write(snowflake + "\" border=\"0\"></div>");
            document.write(snowflake[Math.ceil(Math.random()*10*sneg/10)] + "\" border=\"0\"></div>");
        }
    }
}

function snowNS() { 
    for (i = 0; i < no; ++ i) {  
        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();
            doc_width = self.innerWidth;
            doc_height = self.innerHeight;
        }
        dx[i] += stx[i];
        document.layers["dot"+i].top = yp[i];
        document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]);
    }
    setTimeout("snowNS()", speed);
}

function snowIE() {
    for (i = 0; i < no; ++ i) {
        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();
            doc_width = document.body.clientWidth;
            doc_height = document.body.clientHeight;
            if (doc_height < 300) {doc_height = 300;}
        }
        dx[i] += stx[i];
        document.all["dot"+i].style.pixelTop = yp[i];
        document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]);
    }
    setTimeout("snowIE()", speed);
}

function snowFF() { 
    for (i = 0; i < no; ++ i) {  
        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();
            doc_width = self.innerWidth;
            doc_height = self.innerHeight;
        }
        dx[i] += stx[i];
        string_top = yp[i]+"px";
        string_left = xp[i] + am[i]*Math.sin(dx[i])+"px";
        document.getElementById("dot"+i).style.top = string_top;
        document.getElementById("dot"+i).style.left = string_left;
    }
    setTimeout("snowFF()", speed);
}

if (ns4up) {
    snowNS();
}
else if (ie4up) {
    snowIE();
}
else if (ff) {
    snowFF();
}