function change_area (obj) {
	if (obj.value == 0) {
		var the_array = new Array();
	} else {
		var the_array = eval('area_' + obj.value);
	}
	setOptionText(obj.form.distribution_country, the_array);
}
function setOptionText(the_select, the_array)
{
	the_select.options.length = the_array.length;
	for (loop=0; loop < the_array.length; loop++) {
		the_select.options[loop].value = the_array[loop][0];
		the_select.options[loop].text = the_array[loop][1];
	}
}
function empty_box (obj) {
	obj.value = "";
}