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';
		}
	}	
}