function changeOnglet(_this){
var getOnglets = document.getElementById('mes_onglets').getElementsByTagName('class');
for(var i = 0; i < getOnglets.length; i++){
if(getOnglets[i].id){
if(getOnglets[i].id == _this.id){
getOnglets[i].className = 'mon_onglet_selected';
document.getElementById('c' + _this.id).style.display = 'block';
}
else{
getOnglets[i].className = 'mon_onglet';
document.getElementById('c' + getOnglets[i].id).style.display = 'none';
}
}
}
}