function changeButtons () 
    {
        var myElement = document.getElementById("odinbuttonSTART")
        if (myElement != null) 
        {
            myElement.value = "Start de test";
        }
       var myElement = document.getElementById("odinbuttonOK")
        if (myElement != null) 
        {
            myElement.value = "Start de test";
        }
    }