function multiClass(eltId) {
				arrLinkId = new Array('_0','_1');
				intNbLinkElt = new Number(arrLinkId.length);
				arrClassLink = new Array('current','ghost');
				strContent = new String()
				for (i=0; i<intNbLinkElt; i++) {
					strContent = "menu"+arrLinkId[i];
					if ( arrLinkId[i] == eltId ) {
						document.getElementById(arrLinkId[i]).className = arrClassLink[0];
						document.getElementById(strContent).className = 'on content';
					} else {
						document.getElementById(arrLinkId[i]).className = arrClassLink[1];
						document.getElementById(strContent).className = 'off content';
					}
				}	
			}