function navig(mondiv,diva,divb,divc){
	var leclick=document.getElementById(mondiv).style;
	var ldiva=document.getElementById(diva).style;
	var ldivb=document.getElementById(divb).style;
	var ldivc=document.getElementById(divc).style;
	if(leclick.display=='none'){
		leclick.display='block';
		ldiva.display='none';
		ldivb.display='none';
		ldivc.display='none';
};}
function navigout(mondiv){
	var leclickout=document.getElementById(mondiv).style;	
	leclickout.display='none';
}
function navigon(mondiv){
	var leclickon=document.getElementById(mondiv).style;	
	leclickon.display='block';
}
function seloguer(addx){
	var archive=document.getElementById('addx').style;
	if(archive.display=='block'){
		archive.display='none';
	} else {
		archive.display='block';
};}