function trajet(it,site) {
	id_trajet=parseInt(it);
	url='voyage.php?it='+ id_trajet+'&src='+site;
	fen=window.open(url,'','menubar=no,location=no,scrollbars=yes,screenx=300,screeny=300,Width=600,Height=400,dependant=yes,alwaysraised=yes');
}

function add(im, idm) {
	var url='add_contact.php?id='+ idm +'&im=' + im;
	fen=window.open(url,'','menubar=no,location=no,scrollbars=yes,screenx=0,screeny=0,Width=600,Height=300,dependant=yes,alwaysraised=yes');
}

function affichage_popup(nom_de_la_page, nom_interne_de_la_fenetre) {
	window.open (nom_de_la_page, nom_interne_de_la_fenetre, config='height=180, width=280, toolbar=no, menubar=no, scrollbars=yes, resizable=no, location=no, directories=no, status=no')
}

function isDateValid() {
	if (document.form.if_a.value==6) {
		chaineDate=document.form.date_a.value;
		
		if (chaineDate != "") 
			return false
			
		var ladate = (chaineDate).split("/")
		
		if ((ladate.length != 3) || isNaN(parseInt(ladate[0])) || isNaN(parseInt(ladate[1])) || isNaN(parseInt(ladate[2]))) 
			return false
		
		var unedate = new Date(eval(ladate[2]),eval(ladate[1])-1,eval(ladate[0]))
		var annee = unedate.getYear()
		
		if ((Math.abs(annee)+"").length < 4) annee = annee + 1900
			return ((unedate.getDate() == eval(ladate[0])) && (unedate.getMonth() == eval(ladate[1])-1) && (annee == eval(ladate[2])))
	}
}

function verifFrequence() {
	if(document.getElementById('if_r').value == '6') {
		document.getElementById('champ_date').style.visibility = 'visible';
		document.getElementById('champ_date').style.display = 'block';
		document.getElementById('champ_date_lib').style.visibility = 'visible';
		document.getElementById('champ_date_lib').style.display = 'block';
	} else {
		document.getElementById('champ_date').style.visibility = 'hidden';
		document.getElementById('champ_date').style.display = 'none';
		document.getElementById('champ_date_lib').style.visibility = 'hidden';
		document.getElementById('champ_date_lib').style.display = 'none';
	}
	
	if(document.getElementById('if_a').value == '6') {
		document.getElementById('champ_date_aller').style.visibility = 'visible';
		document.getElementById('champ_date_aller').style.display = 'block';
		document.getElementById('champ_date_lib_aller').style.visibility = 'visible';
		document.getElementById('champ_date_lib_aller').style.display = 'block';
	} else {
		document.getElementById('champ_date_aller').style.visibility = 'hidden';
		document.getElementById('champ_date_aller').style.display = 'none';
		document.getElementById('champ_date_lib_aller').style.visibility = 'hidden';
		document.getElementById('champ_date_lib_aller').style.display = 'none';
	}
}

function affichageRetour(coche) {
	if (coche.checked) {
		document.getElementById('tab_retour').style.visibility = 'visible';
		document.getElementById('tab_retour').style.display = 'block';
	} else {
		document.getElementById('tab_retour').style.visibility = 'hidden';
		document.getElementById('tab_retour').style.display = 'none';
	} 
}