function disabledDep() {
	
	var selectPays = document.getElementById('pays');
	var selectDep = document.getElementById('departement');
	var elementDepNull = document.getElementById('depnull');
	
	if( selectPays.value != 1 ) 
	{
		selectDep.disabled="disabled";
		elementDepNull.selected="selected";
	}
	else
	{
		selectDep.removeAttribute('disabled');
	}
	
	selectDep.action;
	elementDepNull.action;
}