var nav = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 5 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )));

function couleur(obj)
{
	if (nav) obj.style.backgroundColor = "#FFFFFF";
}

function check_fr()
{
	var msg = "";
	
	if (document.formulaire.txtNom.value == "")
	{
		msg += "Le champ 'NOM' est vide\n";
		if (nav) document.formulaire.txtNom.style.backgroundColor = "#B5E2E5";
	}

	if (document.formulaire.txtPrenom.value == "")
	{
		msg += "Le champ 'PRENOM' est vide\n";
		if (nav) document.formulaire.txtPrenom.style.backgroundColor = "#B5E2E5";
	}
	if (document.formulaire.txtEmail.value != "")
	{
		indexAroba = document.formulaire.txtEmail.value.indexOf('@');
		indexPoint = document.formulaire.txtEmail.value.indexOf('.');
		if ((indexAroba < 0) || (indexPoint < 0))
		{
			if (nav) document.formulaire.txtEmail.style.backgroundColor = "#B5E2E5";
			msg += "Le champ 'EMAIL' est incorrecte\n";
		}
	}
	else
	{
		if (nav) document.formulaire.txtEmail.style.backgroundColor = "#B5E2E5";
		msg += "Le champ 'EMAIL' est vide\n";
	}
	
	if (document.formulaire.txtMessage.value == "")
	{
		msg += "Le champ 'MESSAGE' est vide\n";
		if (nav) document.formulaire.txtMessage.style.backgroundColor = "#B5E2E5";
	}
	
	if (msg == "") return(true);
	else
	{
		alert(msg);
		return(false);
	}
}
function check_en()
{
	var msg = "";
	
	if (document.formulaire.txtNom.value == "")
	{
		msg += "The field 'Last name' is empty\n";
		if (nav) document.formulaire.txtNom.style.backgroundColor = "#B5E2E5";
	}

	if (document.formulaire.txtPrenom.value == "")
	{
		msg += "The Field 'First Name' is empty\n";
		if (nav) document.formulaire.txtPrenom.style.backgroundColor = "#B5E2E5";
	}
	if (document.formulaire.txtEmail.value != "")
	{
		indexAroba = document.formulaire.txtEmail.value.indexOf('@');
		indexPoint = document.formulaire.txtEmail.value.indexOf('.');
		if ((indexAroba < 0) || (indexPoint < 0))
		{
			if (nav) document.formulaire.txtEmail.style.backgroundColor = "#B5E2E5";
			msg += "The email address is incorrect\n";
		}
	}
	else
	{
		if (nav) document.formulaire.txtEmail.style.backgroundColor = "#B5E2E5";
		msg += "The field 'Email address' is empty\n";
	}
	
	if (document.formulaire.txtMessage.value == "")
	{
		msg += "The field 'MESSAGE' is empty\n";
		if (nav) document.formulaire.txtMessage.style.backgroundColor = "#B5E2E5";
	}
	
	if (msg == "") return(true);
	else
	{
		alert(msg);
		return(false);
	}
}

function check_de()
{
	var msg = "";
	
	if (document.formulaire.txtNom.value == "")
	{
		msg += "The field 'Last name' is empty\n";
		if (nav) document.formulaire.txtNom.style.backgroundColor = "#B5E2E5";
	}

	if (document.formulaire.txtPrenom.value == "")
	{
		msg += "The Field 'First Name' is empty\n";
		if (nav) document.formulaire.txtPrenom.style.backgroundColor = "#B5E2E5";
	}
	if (document.formulaire.txtEmail.value != "")
	{
		indexAroba = document.formulaire.txtEmail.value.indexOf('@');
		indexPoint = document.formulaire.txtEmail.value.indexOf('.');
		if ((indexAroba < 0) || (indexPoint < 0))
		{
			if (nav) document.formulaire.txtEmail.style.backgroundColor = "#B5E2E5";
			msg += "The email address is incorrect\n";
		}
	}
	else
	{
		if (nav) document.formulaire.txtEmail.style.backgroundColor = "#B5E2E5";
		msg += "The field 'Email address' is empty\n";
	}
	
	if (document.formulaire.txtMessage.value == "")
	{
		msg += "The field 'MESSAGE' is empty\n";
		if (nav) document.formulaire.txtMessage.style.backgroundColor = "#B5E2E5";
	}
	
	if (msg == "") return(true);
	else
	{
		alert(msg);
		return(false);
	}
}