window.onload=montre;
function montre(id) {
var d = document.getElementById(id);
	for (var i = 1; i<=4; i++) {
		if (document.getElementById('smenu'+i)) {document.getElementById('smenu'+i).style.display='none';}
	}
if (d) {d.style.display='block';}
}


function nabidka(idex, idex1, idex2, idex3){

idex1.style.display='none'
idex2.style.display='none'
idex3.style.display='none'

if (idex.style.display == 'none')
idex.style.display='';
else
idex.style.display='none'
}