/**
 * Shows an address block
 *
 * @param string id
 *
 * @return boolean false
 */
function showAddress(id)
{
	var addresses = document.getElementsByClassName('address');
	
	for(i = 0; i < addresses.length; i++)
	{
		addresses[i].style.display = "none";
	}

	/* show requested */
	document.getElementById(id).style.display = "block";
}