function expert_show (){
	var cotations_bis= $('ssmenu_expert').getElement('ul');
	cotations_bis.style.visibility="visible";
}
			
function expert_hide(){
	var cotations_bis= $('ssmenu_expert').getElement('ul');
	cotations_bis.style.visibility="hidden";
}

function marpij_show (){
	var prez_bis= $('ssmenu_marpij').getElement('ul');
	prez_bis.style.visibility="visible";
}
			
function marpij_hide(){
	var prez_bis= $('ssmenu_marpij').getElement('ul');
	prez_bis.style.visibility="hidden";
}

function ref_show (){
	var prez_bis= $('ssmenu_ref').getElement('ul');
	prez_bis.style.visibility="visible";
}
			
function ref_hide(){
	var prez_bis= $('ssmenu_ref').getElement('ul');
	prez_bis.style.visibility="hidden";
}