var form = "";
var submitted = false;
var error = false;
var error_message = "";

function check_input(field_name, field_size, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value == '' || field_value.length < field_size) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}

function check_email(email, message) {
	var a=form.elements[email].value;
	var test="" + a;
	//RE = /^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+([\.][a-z0-9-]+)+$/;
	//RE = /^[A-Za-z0-9\.\-_]+[@][A-Za-z0-9\-\.]+[\.][A-Za-z][A-Za-z][A-Za-z][A-Za-z]?$/;
	RE = /^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+([\.][a-z0-9-]+)*$/;
	if (!RE.test(test)) {
		error_message = error_message + "* " + message + "\n";
		error = true;		
	}
}

function check_radio(field_name, message) {
  var isChecked = false;

  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var radio = form.elements[field_name];

    for (var i=0; i<radio.length; i++) {
      if (radio[i].checked == true) {
        isChecked = true;
        break;
      }
    }

    if (isChecked == false) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}
// ça marche pas
function check_box(field_name, message) {
  var isChecked = false;
 
  if (form.elements[field_name] ) {
    var radio = form.elements[field_name];

    for (var i=0; i<radio.length; i++) {
      if (radio[i].value !== '') {
        isChecked = true;
        break;
      }
    }

    if (isChecked == false) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}

function check_password(field_name_1, field_name_2, field_size, message_1, message_2) {
  if (form.elements[field_name_1] && (form.elements[field_name_1].type != "hidden")) {
    var password = form.elements[field_name_1].value;
    var confirmation = form.elements[field_name_2].value;

    if (password == '' || password.length < field_size) {
      error_message = error_message + "* " + message_1 + "\n";
      error = true;
    } else if (password != confirmation) {
      error_message = error_message + "* " + message_2 + "\n";
      error = true;
    }
  }
}

function check_password_change(field_name_1, field_name_2, field_size, message_1, message_2) {
  if (form.elements[field_name_1] && (form.elements[field_name_1].type != "hidden")) {
    var password = form.elements[field_name_1].value;
    var confirmation = form.elements[field_name_2].value;

	if (password != '') {
    	if (password.length < field_size) {
	      error_message = error_message + "* " + message_1 + "\n";
	      error = true;
	    } else if (password != confirmation) {
	      error_message = error_message + "* " + message_2 + "\n";
	      error = true;
	    }
	}
  }
}



function check_select(field_name, field_default, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value == field_default) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}

function check_format(field_name, format, message) {
	fichier = form.elements[field_name].value ;
	if (fichier != '') {
		
	    var file = form.elements[field_name];
	
	    var args = format.split("|"); 
	    var ok = false; 
	    var arg_list = new String; 
	    for (i = 0; i < args.length; i++) { 
	        var valeur = args[i]; 
	        var nom_fic = file.value.substr(file.value.length - valeur.length, valeur.length).toLowerCase();
	
	        if (valeur == nom_fic) { 
	            ok = true; 
	        } 
	    } 
	    if (!ok) {
	    	 error_message = error_message + "* " + message + "\n";
	     	 error = true;  
	    }
	} 
}

function check_phone(field_name, message) {
		var phone = form.elements[field_name].value ;
		if (phone != '') {
			if (isNaN(phone)) { 
				error_message = error_message + "* " + message + "\n";
				error = true;
			}
		}
}

function valid_form() {
		document.forms.formulaire.x.value = "1" ;		
		document.forms.formulaire.submit();
	}