var layer=new Array('coordonnees','fonctions','enseignement','domaines','these','publications', 'personnel');
			var nbDivs=7;

		function toogleLayer(whichLayer) {
			//window.alert('toogle layer :'+whichLayer);
			var elem, vis;
			if( document.getElementById ) // this is the way the standards work
				elem = document.getElementById( whichLayer );
			else if( document.all ) // this is the way old msie versions work
				elem = document.all[whichLayer];
			else if( document.layers ) // this is the way nn4 works
				elem = document.layers[whichLayer];

			vis = elem.style;
			// if the style.display value is blank we try to figure it out here
			if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
				vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
			vis.display = (vis.display==''||vis.display=='block')?'none':'block';
			//window.alert(vis.display);
			}
		function closeAll() {
			var elem, vis;
			for (i=0;i<nbDivs;i++)
			{	
				whichLayer=layer[i];
				if( document.getElementById ) // this is the way the standards work
					elem = document.getElementById( whichLayer );
				else if( document.all ) // this is the way old msie versions work
					elem = document.all[whichLayer];
				else if( document.layers ) // this is the way nn4 works
					elem = document.layers[whichLayer];

				vis = elem.style;
				// if the style.display value is blank we try to figure it out here
			  	vis.display = 'none';
			}
			}
		function openAll() {
			var elem, vis;
			for (i=0;i<nbDivs;i++)
			{	
				whichLayer=layer[i];
				if( document.getElementById ) // this is the way the standards work
					elem = document.getElementById( whichLayer );
				else if( document.all ) // this is the way old msie versions work
					elem = document.all[whichLayer];
				else if( document.layers ) // this is the way nn4 works
					elem = document.layers[whichLayer];

				vis = elem.style;
				// if the style.display value is blank we try to figure it out here
			  	vis.display = 'block';
			}
			}