function changeImg (id) {
	if (document.getElementById('img' + id).src == 'http://www.financiere-socotra.com/images/icone_socotra.png') {
		document.getElementById('img' + id).src = 'http://www.financiere-socotra.com/images/icone_socotra_over.png';
	} else {
		document.getElementById('img' + id).src = 'http://www.financiere-socotra.com/images/icone_socotra.png';
	}
}