function affiche_menu(id)
{
  /*if(id == 5) document.getElementById("lien_"+id).className = "contact_hover";
  else */document.getElementById("lien_"+id).className = "bouton_hover"; 
  document.getElementById("menu_"+id).style.top = "29px";
  document.getElementById("menu_"+id).style.zIndex = "5";
}

function cache_menu(id)
{
	/*if(id == 5) document.getElementById("lien_"+id).className = "contact";
	else */document.getElementById("lien_"+id).className = "bouton";
	document.getElementById("menu_"+id).style.top = "-1000px";
	document.getElementById("menu_"+id).style.zIndex = "-100";
}

function affiche_menu_hover(id)
{
  document.getElementById("menu_"+id).style.top = "29px";
  document.getElementById("menu_"+id).style.zIndex = "5";
}

function cache_menu_hover(id)
{
	document.getElementById("menu_"+id).style.top = "-1000px";
	document.getElementById("menu_"+id).style.zIndex = "-100";
}

function colonne()
{
	hauteur_1 = document.getElementById('colonne_1').clientHeight;
	hauteur_2 = document.getElementById('colonne_2').clientHeight;
	
	if(hauteur_2 > hauteur_1) document.getElementById('colonne_1').style.height = hauteur_2+"px";
}

function cache(element)
{
  document.getElementById(element).style.display='none';
}

function chargement_banniere(element)
{
  document.getElementById('banniere_'+element).onload = function()
  {
    cache('loading_banniere_'+element);
  }
}

function debugg_banniere()
{
   cache('loading_banniere_0');
   cache('loading_banniere_1');
   cache('loading_banniere_2');
   cache('loading_banniere_3');
   cache('loading_banniere_4');
   cache('loading_banniere_5');      
}