//cache le calque
function closebulle(dnbul) 
{
document.getElementById('block_bulle'+dnbul).style.display = "none";
document.getElementById('link_bulle'+dnbul).className= "";
}

	
//initie les variables du menu
dnbul=1

//montre le calque
function openbulle(nbul)
{
document.getElementById('block_bulle'+dnbul).style.display = "none";
document.getElementById('link_bulle'+dnbul).className= "";
document.getElementById('block_bulle'+nbul).style.display = "block";
document.getElementById('link_bulle'+nbul).className= "active";
dnbul=nbul;
}