ody>
    <a href="../index.html">cola.js home</a>
<h1>Kotekan Pipeline</h1>
<div class="dropdown">
    <button onclick="onclick_cb()" class="dropbtn">Select a file</button>
    <div id="file_dropdown" class="dropdown-content"></div>
</div>
<div class="slidecontainer">
    <input type="range" min="0" max="100" step="0.01" value="100" class="slider" id="slide_input">
    <p>time: <span id="slide_value"></span></p>
</div>

<script>
    function onclick_cb() {
        document.getElementById("file_dropdown").cl