function toggleMenu(mid, depth)
{
	el = document.getElementById('pg' + mid);
	el.className = (el.className=='m0') ? ('ul' + depth) : 'm0';
	return false;
}

function wakeInput(field, text)
{
	if (field.value == text) field.value = '';
}

function sleepInput(field, text)
{
	if (field.value == '') field.value = text;
}

function activateManufacturersMenu()
{
	var mvk = document.getElementById('menu-volba-kategorie');
	var mvv = document.getElementById('menu-volba-vyrobce');
	var mk = document.getElementById('menu-kategorie');
	var mv = document.getElementById('menu-vyrobce');

	mvk.className = 'm0';
	mvv.className = 'pre-menu';
	mk.className = 'm0';
	mv.className = 'm1';
	return false;
}

function activateCategoriesMenu()
{
	var mvk = document.getElementById('menu-volba-kategorie');
	var mvv = document.getElementById('menu-volba-vyrobce');
	var mk = document.getElementById('menu-kategorie');
	var mv = document.getElementById('menu-vyrobce');

	mvk.className = 'pre-menu';
	mvv.className = 'm0';
	mk.className = 'm1';
	mv.className = 'm0';
	return false;
}