function showhidediv(div) {
	if (document.getElementById) { // DOM3 = IE5, NS6
		if (document.getElementById(div).style.visibility == 'hidden')
		{
			document.getElementById(div).style.visibility = 'visible';
			document.getElementById(div).style.display = 'block';
			document.getElementById(div).style.height = '';
			document.getElementById('icon_cartable').src='/design/canalu/images/img_html/icon_cartable_ouvrir.gif';
			if (document.getElementById('zone_icon_cartable') != null)
			{
				document.getElementById('zone_icon_cartable').style.display='';
			}
		}
		else
		{
			document.getElementById(div).style.visibility = 'hidden';
			document.getElementById(div).style.display = 'none';
			document.getElementById(div).style.height="0px";
			document.getElementById('icon_cartable').src='/design/canalu/images/img_html/icon_cartable_ferme.gif';
			if (document.getElementById('zone_icon_cartable') != null)
			{
				document.getElementById('zone_icon_cartable').style.display='none';
			}
		}
	}
	else { // IE 4
		if (document.all['div'].style.visibility == 'hidden')
		{
			document.all['div'].style.visibility == 'visible'
			document.all['div'].style.height='';
			document.all['icon_cartable'].src='/design/canalu/images/img_html/icon_cartable_ouvrir.gif';
		}
		 else
		 {
		 	document.all['div'].style.visibility = 'hidden';
		 	document.all['div'].style.height = '0px';
		 	document.all['icon_cartable'].src='/design/canalu/images/img_html/icon_cartable_ferme.gif';
		 }
	}
}