function open_menu(div){
	new Effect.BlindDown(document.getElementById(div));
}

function close_menu(div){
	new Effect.BlindUp(document.getElementById(div));
}

var id_actu_cur=1;
function actu(id){
	onglet_actu(id);
	id_actu_cur=id;
	move_flash(calcul_mvt_actu(id_actu_cur));
	clearInterval(flashs_automatique);
}

function onglet_actu(id){
	for(i=1;i<=5;i++){
		if(i==id){
			gId('onglet_actu_'+i).src='/img/actu/onglets/ong_'+i+'_on.png';	
		}else{
			gId('onglet_actu_'+i).src='/img/actu/onglets/ong_'+i+'_off.png';	
		}
	}
}

function move_flash(largeur) {
	$('#photoflash_liste').stop().animate({marginTop:largeur},"slow");
}
		
function auto_move_flash() {
	id_actu_cur++;
	if(id_actu_cur>5){
		id_actu_cur=1;
	}
	onglet_actu(id_actu_cur);
	move_flash(calcul_mvt_actu(id_actu_cur));
}
	
flashs_automatique = setInterval("auto_move_flash()",5000);


function calcul_mvt_actu(id){
	var marg=-255*(id_actu_cur-1);		
	return marg;	
}