function multiClass(eltId) {
arrLinkId = new Array('_0','_1','_2');
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';
 }
}
}