(function() {
    var SNOW_Picture = "http://www.wintershop.ru/pic/snow3.gif"
    var SNOW_no = 8;

    var SNOW_browser_IE_NS = (document.body.clientHeight) ? 1 : 0;
    var SNOW_browser_MOZ = (self.innerWidth) ? 1 : 0;
    var SNOW_browser2_IE_NS = (document.documentElement && document.documentElement.clientWidth ) ? 1 : 0;

    var SNOW_Time;
    var SNOW_dx, SNOW_xp, SNOW_yp;
    var SNOW_am, SNOW_stx, SNOW_sty;
    var i, SNOW_Browser_Width, SNOW_Browser_Height;

    if (SNOW_browser_IE_NS) {
        SNOW_Browser_Width = document.body.clientWidth - 25;
        SNOW_Browser_Height = 250;//document.body.clientHeight;
    }
    else if (SNOW_browser_MOZ) {
        SNOW_Browser_Width = self.innerWidth - 25;
        SNOW_Browser_Height = 250;//self.innerHeight;
    }
    else if (SNOW_browser2_IE_NS) {
        SNOW_Browser_Width = document.documentElement.clientWidth - 25;
        SNOW_Browser_Height = 250;//document.documentElement.clientHeight;
    }

    SNOW_dx = new Array();
    SNOW_xp = new Array();
    SNOW_yp = new Array();
    SNOW_am = new Array();
    SNOW_stx = new Array();
    SNOW_sty = new Array();

    for (i = 0; i < SNOW_no; ++ i) {
        SNOW_dx[i] = 0;
        SNOW_xp[i] = Math.random() * (SNOW_Browser_Width - 50);
        SNOW_yp[i] = Math.random() * SNOW_Browser_Height;
        SNOW_am[i] = Math.random() * 20;
        SNOW_stx[i] = 0.02 + Math.random() / 10;
        SNOW_sty[i] = 0.7 + Math.random();
        document.write("<div id=\"SNOW_flake" + i + "\" style=\"position: absolute; z-index: " + i + "; visibility: visible; top: 15px; left: 15px;\"><img src=\"" + SNOW_Picture + "\" border=\"0\"><\/div>");
    }

    var flakePosition = [], flakes = [];

    function SNOW_Weather () {

        for (i = 0; i < SNOW_no; ++ i) {
            SNOW_yp[i] += SNOW_sty[i];

            if (SNOW_yp[i] > SNOW_Browser_Height - 50) {
                SNOW_xp[i] = Math.random() * (SNOW_Browser_Width - SNOW_am[i] - 30);
                SNOW_yp[i] = 0;
                SNOW_stx[i] = 0.02 + Math.random() / 10;
                SNOW_sty[i] = 0.7 + Math.random();
            }

            SNOW_dx[i] += SNOW_stx[i];

            var position = [Math.round(SNOW_yp[i]),Math.round(SNOW_xp[i] + SNOW_am[i] * Math.sin(SNOW_dx[i]))],
                inflake = flakePosition[i] || [],
                flake = flakes[i] || document.getElementById("SNOW_flake" + i);
            if (position[0] == inflake[0] && position[1] != inflake[1]) {

            } else {

                flakes[i] = flake;
                flakePosition[i] = position;

                flake.style.top = position[0] + "px";
                flake.style.left = position[1] + "px";
            }
        }

        SNOW_Time = setTimeout(SNOW_Weather, 70);

    }

    SNOW_Weather();
})();