// Fonctions utiles pour verifier les formulaires :

function isNumeric(sText)
{
	var ValidChars = "0123456789.";
	var IsNumber = true;
	var Char;
	
	for (i = 0; i < sText.length && IsNumber == true; i++) 
	{ 
		Char = sText.charAt(i); 
		if (ValidChars.indexOf(Char) == -1) 
			IsNumber = false;
	}
	
	return IsNumber;
}



function isEmpty(champ)
{
	if ((champ.value.length == 0) || (champ.value == null))
		return true;
	else
		return false;
}



function isValidEmail(str)
{
	return (str.lastIndexOf(".") > 2) && (str.indexOf("@") > 0);
}