function onglet(id){
	var source = document.getElementById('onglet'+id).src;
	if(source.indexOf('_o.png') == -1)
		document.getElementById('onglet'+id).src = source.substring(0, source.length-4)+'_o.png';
	for(i = 0; i < 9; i++){
		if(i != id){
			source = document.getElementById('onglet'+i).src;
			if(source.indexOf('_o.png') != -1)
			document.getElementById('onglet'+i).src = source.substring(0, source.length-6)+'.png';
			document.getElementById('contenu'+i).style.display = 'none';
		}
	}
	document.getElementById('contenu'+id).style.display = 'block';
	document.getElementById('onglet'+id).blur();
}

onglet(0);