var cats = ['technologie','produits','societe','mediacenter','contact','aeronautique'];

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

    function rend_visible(nomobjet)
    { 
        object = MM_findObj(nomobjet);
        object.className = 'visible';
					var i, cat, object;
        for (i=0;i<cats.length;i++) {
            cat = MM_findObj(cats[i]);
            if (cats[i] != nomobjet)  {
			cat.className = 'invisible'; 
												}
        }
    }
	
function changeclass(objet, myClass)
    { 
      objet.className = myClass;
    }