function show()
{
document.getElementById('submenu0').style.visibility="visible"
}

function hide()
{
document.getElementById("submenu0").style.visibility="hidden"
}

function show1()
{
document.getElementById('submenu1').style.visibility="visible"
}

function hide1()
{
document.getElementById("submenu1").style.visibility="hidden"
}

function show2()
{
document.getElementById('submenu2').style.visibility="visible"
}

function hide2()
{
document.getElementById("submenu2").style.visibility="hidden"
}

function show3()
{
document.getElementById('submenu3').style.visibility="visible"
}

function hide3()
{
document.getElementById("submenu3").style.visibility="hidden"
}

function show4()
{
document.getElementById('submenu4').style.visibility="visible"
}

function hide4()
{
document.getElementById("submenu4").style.visibility="hidden"
}

function show5()
{
document.getElementById('submenu5').style.visibility="visible"
}

function hide5()
{
document.getElementById("submenu5").style.visibility="hidden"
}