function switchDiv(idDiv) {
	if (document.getElementById(idDiv + 'Over').style.display == 'none')
	{
		document.getElementById(idDiv + 'Over').style.display = 'block';
		document.getElementById('arrow_' + idDiv).src = 'images/arrowUp.jpg';
	}
	else 
	{
		document.getElementById(idDiv + 'Over').style.display = 'none';
		document.getElementById('arrow_' + idDiv).src = 'images/arrowDown.jpg';
	}
}