//ajoute l'image cliquable devant les items accédants aux sous-menus et cache ceux-ci.
function initMenu(){
  objMenu=document.getElementById('menu_deroulant');
  lis=objMenu.getElementsByTagName('li');
  for(i=0;i<lis.length;i++){ var L=lis[i];
  if(L.getElementsByTagName('ul')[0]){
    L.innerHTML='<a href="#" style="background-color:transparent;border:0;margin:0;padding:0" onkeydown="af(this)" onmousedown="af(this)"><img src="biopics/deplierhaut.gif" border="0" \/><\/a> '+L.innerHTML;
    L.style.listStyle="none";
    L.getElementsByTagName('ul')[0].style.display="none";
    } 
  }
}

function ef(el) { //réduit
with (el){
  parentNode.getElementsByTagName('ul')[0].style.display="none";
  onmousedown=onkeydown=function(){af(this)};
  firstChild.src="biopics/deplierhaut.gif";border="0";
  }
}

function af(el) { //développe
with (el){
  parentNode.getElementsByTagName('ul')[0].style.display="block";
  onmousedown=onkeydown=function(){ef(this)};
  firstChild.src="biopics/deplierbas.gif";border="0";
  }
}

function start(){
  show(startmenu);
  initMenu();
}

window.onload = start;
//-->