function toggleMenu(id, range) {
	var menuTab;	
	var selectTab;
	var infoArea;
	var i;
	// sets all the tabs back to normal state
	for (i = 1; i < range + 1; i++) {
		infoArea = 'info_' + i;
		infoObject = document.getElementById(infoArea);				
		infoObject.style.display = 'none';
	}
	infoArea = 'info_' + id;
	infoObject = document.getElementById(infoArea);				
	infoObject.style.display = 'block';
	return;
}