var iTimeout=5000;
var iContent=0;
var timer;

function show_actu(id, objClick) {
	for( var i=1; i<=5; i++ ) {
		objDiv = document.getElementById('article_'+i);
		objLi = document.getElementById('a_'+i);
		if (i==id)
		{
			objDiv.className='';
			objLi.className='encours';
		}
		else
		{
			objDiv.className='article_hide';
			objLi.className='';
		}
	} 
	iContent=id;
	if (objClick==null)
		timer=setTimeout("show_diapo()",iTimeout);
	else
		clearTimeout(timer);
}

function show_diapo() {
	iContent++;
	if (iContent>5)
		iContent=1;
	show_actu(iContent, null);
}

function lanceNip() {
	show_diapo();
}