// show and hide sub-menu 

function show(item)
{
document.getElementById(item).style.visibility="visible";
}

function hide(item)
{
document.getElementById(item).style.visibility="hidden";
}
// function KozAblak(){
// 	window.open
//	("tabor.pdf","kozepesablak","height=768,width=1024,resizable=yes,toolbar=no,scrollbars=yes,location=no")
// }