// main menu  
function aboutShow() {
	if (document.getElementById) {
		allNavClose();
		document.getElementById('submenuAbout').style.visibility = 'visible';
		document.getElementById('allNavClose').style.visibility = 'visible';
	}
}
function aboutHide() {
	if (document.getElementById) {
		document.getElementById('submenuAbout').style.visibility = 'hidden';
	}
}
function programsShow() {
	if (document.getElementById) {
		allNavClose();
		document.getElementById('submenuPrograms').style.visibility = 'visible';
		document.getElementById('allNavClose').style.visibility = 'visible';
	}
}
function programsHide() {
	if (document.getElementById) {
		document.getElementById('submenuPrograms').style.visibility = 'hidden';
	}
}
function contactShow() {
	if (document.getElementById) {
		allNavClose();
		document.getElementById('submenuContact').style.visibility = 'visible';
		document.getElementById('allNavClose').style.visibility = 'visible';
	}
}
function contactHide() {
	if (document.getElementById) {
		document.getElementById('submenuContact').style.visibility = 'hidden';
	}
}
function salonShow() {
	if (document.getElementById) {
		allNavClose();
		document.getElementById('submenuSalon').style.visibility = 'visible';
		document.getElementById('allNavClose').style.visibility = 'visible';
	}
}
function salonHide() {
	if (document.getElementById) {
		document.getElementById('submenuSalon').style.visibility = 'hidden';
	}
}


function allNavClose() {
		document.getElementById('allNavClose').style.visibility = 'hidden';
		programsHide();
		contactHide();
		salonHide();
		aboutHide();
}