function cervicek() {
    var direction = 1 - Math.random() * 2;
    var rlast = -140;
    var tbtw = 50 - Math.random() * 100;
    var tlast = 0;
    if (tbtw > 0) {
        tlast = -260 + tbtw;
    } else {
        tlast = 260 + tbtw;
    }
    $("#cervicek").css({left: rlast+"px", marginTop: tlast+"px", top: 50+"%"});

    setTimeout(function () {
        phase();
        /*
        $("#motylek").animate({
            right: p0r+"px",
            top: p0t+"px"
          }, 3000, "linear", phase1 );
        */
        }, Math.random()*20000);

    var pcount = 80;
    var rbase = 20;
    var tbase = 1;
    var trand = tbase * 2;
    var max = tbase;
    var duration = 190;

    function phase() {
        if (pcount < 1) {
            cervicek();
            return;
        }
        pcount--;
        var tdif = tbase + direction - Math.random() * trand;
        tlast = tlast + tdif;
        rlast = rlast + rbase + (max - Math.abs(tdif));

        $("#cervicek").animate({
            left: rlast+"px",
            marginTop: tlast+"px"
          }, duration, "linear", phase );

    }

}

function motylek() {
    var direction = 15 - Math.random() * 30;
    var rlast = -100;
    var tlast = 50 + Math.random() * 500;
    $("#motylek").css({right: rlast+"px", top: tlast+"px"});

    setTimeout(function () {
        phase();
        /*
        $("#motylek").animate({
            right: p0r+"px",
            top: p0t+"px"
          }, 3000, "linear", phase1 );
        */
        }, Math.random()*10000);

    var pcount = 80;
    var rbase = 20;
    var tbase = 10;
    var trand = tbase * 2;
    var max = tbase;
    var duration = 220;

    function phase() {
        if (pcount < 1) {
            motylek();
            return;
        }
        pcount--;
        var tdif = tbase + direction - Math.random() * trand;
        tlast = tlast + tdif;
        rlast = rlast + rbase + (max - Math.abs(tdif));

        $("#motylek").animate({
            right: rlast+"px",
            top: tlast+"px"
          }, duration, "linear", phase );
    }
}

function motylekNaKyticce() {
    var p = Math.round(Math.random()*7);
    $("#motylek-na-kyticce").css({display: "block"});
    switch (p) {
        case 0:
            $("#motylek-na-kyticce").css({left: "356px", top: "49px"});
            break;
        case 1:
            $("#motylek-na-kyticce").css({left: "476px", top: "-211px"});
            break;
        case 2:
            $("#motylek-na-kyticce").css({left: "-314px", top: "-171px"});
            break;
        case 3:
            $("#motylek-na-kyticce").css({left: "-304px", top: "49px"});
            break;
        case 4:
            $("#motylek-na-kyticce").css({left: "-514px", top: "199px"});
            break;
        case 5:
            $("#motylek-na-kyticce").css({left: "-514px", top: "-111px"});
            break;
        case 6:
            $("#motylek-na-kyticce").css({left: "-314px", top: "-341px"});
            break;
        case 7:
            $("#motylek-na-kyticce").css({left: "256px", top: "259px"});
            break;
        default:
            break;
    }
}

function kyticky() {
    var p = Math.round(Math.random()*9)+1;
    $("#k-oranzova"+p).css({display: "block"});
    p = Math.round(Math.random()*9)+1;
    $("#k-oranzova"+p).css({display: "block"});
    p = Math.round(Math.random()*9)+1;
    $("#k-oranzova"+p).css({display: "block"});
    p = Math.round(Math.random()*9)+1;
    $("#k-oranzova"+p).css({display: "block"});
}