function gererDates() {
	//try {
		termine = document.signalPheno.en_cours[0]
		periode = document.signalPheno.periodeSignal
		dat_debut = document.signalPheno.datdebut
		dat_fin = document.signalPheno.datfin
		heure_debut_H = document.signalPheno.elements['heuredebut[H]']
		heure_debut_i = document.signalPheno.elements['heuredebut[i]']
		heure_fin_H = document.signalPheno.elements['heurefin[H]']
		heure_fin_i = document.signalPheno.elements['heurefin[i]']
		div_dat_debut = document.getElementById('datdebPheno')
		div_dat_fin = document.getElementById('datfinPheno')
		if (periode.selectedIndex!=0) {
			dat_debut.disabled = true
			heure_debut_H.disabled = true
			heure_debut_i.disabled = true
			dat_fin.disabled = true
			heure_debut_H.value = ''
			heure_debut_i.value = ''
			heure_fin_H.disabled = true
			heure_fin_i.disabled = true
			heure_fin_H.value = ''
			heure_fin_i.value = ''
			dat_debut.value=''
			dat_fin.value=''
		} else {
			dat_debut.disabled = false
			heure_debut_H.disabled = false
			heure_debut_i.disabled = false
			if (termine.checked) {
				//div_dat_fin.style.visibility = 'visible'
				dat_fin.disabled = false
				heure_fin_H.disabled = false
				heure_fin_i.disabled = false				
			} else {
				//div_dat_fin.style.visibility = 'hidden'
				dat_fin.disabled = true
				heure_fin_H.disabled = true
				heure_fin_i.disabled = true
				dat_fin.value=''
				heure_fin_H.value = ''
				heure_fin_i.value = ''
			}
		}
		/*
	} catch(e) {
		e.message
	}
	*/
}