function change_region(num)
{
	switch(num)
	{
		case "Belgique":
			{
				document.getElementById("region").disabled = false;
				document.getElementById("region").options[25].selected = true;
				break;
			}
		case "France":
			{
				document.getElementById("region").disabled = false;
				document.getElementById("region").options[0].selected = true;
				break;
			}
		case "Luxembourg":document.getElementById("region").disabled = true;break;
		case "Quebec":document.getElementById("region").disabled = true;break;
		case "Suisse":
			{
				document.getElementById("region").disabled = false;
				document.getElementById("region").options[37].selected = true;
			}
	}
}