function showpic(n)
{
for (i = 1; i < 10; i++) { eval('var menu'+i+' = document.getElementById("menu'+i+'");'); }
	eval("menu"+n).style.visibility = "visible";
}

function hide(n)
{
for (i = 1; i < 10; i++) { eval('var menu'+i+' = document.getElementById("menu'+i+'");'); }
	eval("menu"+n).style.visibility = "hidden";
}