var previousmenu = '';
function togglemenu(menu, state) {
	if (state == 'show') {
		if (previousmenu != '')
			previousmenu.style.left='-3000px';
		previousmenu = document.getElementById(menu);
		previousmenu.style.left='0px';
	}
	else {
		document.getElementById(menu).style.left='-3000px';
		previousmenu = '';
	}
}