function showElement(element) {
	document.getElementById(element).style.visibility = 'visible';
}

function hideElement(element) {
	document.getElementById(element).style.visibility = 'hidden';
}

function showCompanyMenu() {
	showElement('companymenu');
	hideElement('productsmenu');
	hideElement('resourcesmenu');
}

function showProductsMenu() {
	showElement('productsmenu');
	hideElement('resourcesmenu');
	hideElement('companymenu');
}

function showResourcesMenu() {
	showElement('resourcesmenu');
	hideElement('productsmenu');
	hideElement('companymenu');
}