function showHideDescription(numElement)
{
	 	if (document.getElementById("descript"+numElement).style.display == "none") // maximize
		{
			document.getElementById("descript"+numElement).style.display = "block";
			document.getElementById("picto"+numElement).src = "../images/tpl_moins.gif";
		}
		else // Minimize
		{
			document.getElementById("descript"+numElement).style.display = "none";
			document.getElementById("picto"+numElement).src = "../images/tpl_plus.gif";
		}
}

function hideAllDescript()
{
	for ($i=1; $i<=24; $i++)
	{
		eval('document.getElementById("descript'+$i+'").style.display = "none";');
	}
}