// ---------------------------------------------------------------
// formate un nombre comme la fonction php number_format
// exemple pour transformer un nombre en prix => numberFormat(global_totalAvecFraisDePort,2,","," ")
// ---------------------------------------------------------------
function numberFormat(number, decimals, dec_point, thousands_sep)
{
	var exponent = "";
	var numberstr = number.toString ();
	var eindex = numberstr.indexOf ("e");
	if (eindex > -1)
	{
	exponent = numberstr.substring (eindex);
	number = parseFloat (numberstr.substring (0, eindex));
	}
	
	if (decimals != null)
	{
	var temp = Math.pow (10, decimals);
	number = Math.round (number * temp) / temp;
	}
	var sign = number < 0 ? "-" : "";
	var integer = (number > 0 ? 
	  Math.floor (number) : Math.abs (Math.ceil (number))).toString ();
	
	var fractional = number.toString ().substring (integer.length + sign.length);
	dec_point = dec_point != null ? dec_point : ".";
	fractional = decimals != null && decimals > 0 || fractional.length > 1 ? 
	           (dec_point + fractional.substring (1)) : "";
	if (decimals != null && decimals > 0)
	{
	for (i = fractional.length - 1, z = decimals; i < z; ++i)
	  fractional += "0";
	}
	
	thousands_sep = (thousands_sep != dec_point || fractional.length == 0) ? 
	              thousands_sep : null;
	if (thousands_sep != null && thousands_sep != "")
	{
	for (i = integer.length - 3; i > 0; i -= 3)
	  integer = integer.substring (0 , i) + thousands_sep + integer.substring (i);
	}
	
	return sign + integer + fractional + exponent;
}