// function isValidActionForm(form)
function isValidActionForm(form) {
	var all_ok=true;
	if( (form.action_todo.value == "") || (form.addresspicker_map.value == "") || (form.date_debut.value == "") || (form.nb_participant.selectedIndex == 0) 
			|| ( isDefined(form.type) && (form.type.selectedIndex == 0) )
			|| ( isDefined(form.visu_type) && (form.visu_type.value == "") )
	) all_ok=false;
	
	if(!all_ok) {
		alert("Please fill in all fields");
		return false;
	}
	else return true;
}

// function isValidChallengeForm(form)
function isValidChallengeForm(form) {
	
	var all_ok=true;
	if( (form.action_todo.value == "") || (form.addresspicker_map.value == "") || (form.a_ameliorer.value == "") || (form.description.value == "")  
			|| ( isDefined(form.type) && (form.type.selectedIndex == 0) )
			|| ( isDefined(form.visu_type) && (form.visu_type.value == "") )
			) all_ok=false;
	
	if(!all_ok) {
		alert("Please fill in all fields");
		return false;
	}
	else return true;
}