function changeBackground(a)
{
    if (document.body) { document.body.style.backgroundImage = "url(images/"+a+".jpg)"; }
}

function showHideInfo()
{
    theinfo = document.getElementById("info");
    thethanks = document.getElementById("thanks");
    
    if (thethanks.style.display == "block") thethanks.style.display = "none";
    if (theinfo.style.display == "none") theinfo.style.display = "block";
    else theinfo.style.display = "none";    
}

function showHideThanks()
{
    thethanks = document.getElementById("thanks");
    theinfo = document.getElementById("info");
    
    if (theinfo.style.display == "block") theinfo.style.display = "none";
    if (thethanks.style.display == "none") thethanks.style.display = "block";
    else thethanks.style.display = "none";
}

function showHideMenu()
{
    themenu = document.getElementById("allmenu");
    thebuymenu = document.getElementById("buymenu");
    theinfo = document.getElementById("info");
    thethanks = document.getElementById("thanks");
    
    if (themenu.style.visibility == "visible") { themenu.style.visibility = "hidden"; thebuymenu.style.visibility = "hidden"; theinfo.style.display = "none"; thethanks.style.display = "none"; }
    else { themenu.style.visibility = "visible"; thebuymenu.style.visibility = "visible"; }
}

function changeTabs(a)
{    
    document.getElementById("menu"+a).className="menuactive";
    for(i=1;i<9;i++) { if (i!=a) document.getElementById("menu"+i).className="menu"; }
}