function displaytab( number )
{
    document.getElementById( "tabboxone" ).style.display = "none";
    document.getElementById( "tabboxtwo" ).style.display = "none";
    document.getElementById( "tabboxthree" ).style.display = "none";
    document.getElementById( "tabboxfour" ).style.display = "none";
    document.getElementById( "tabboxfive" ).style.display = "none";
    document.getElementById( "tabboxsix" ).style.display = "none";

    var identify = "tabbox" + number;

    document.getElementById( identify ).style.display = "block";
    document.getElementById( "one" ).childNodes[0].childNodes[0].id = "";
    document.getElementById( "two" ).childNodes[0].childNodes[0].id = "";
    document.getElementById( "three" ).childNodes[0].childNodes[0].id = "";
    document.getElementById( "four" ).childNodes[0].childNodes[0].id = "";
    document.getElementById( "five" ).childNodes[0].childNodes[0].id = "";
    document.getElementById( "six" ).childNodes[0].childNodes[0].id = "";

    document.getElementById( number ).childNodes[0].childNodes[0].id = "current";
}

function switchMonth( oldMonth, newMonth )
{
    document.getElementById( oldMonth ).style.display = "none";
    document.getElementById( newMonth ).style.display = "block";
}