function getDepartments(department_id) {
	var region_id = document.getElementById('region_id').value;
	var url = 'ajax.php?action=get_departments&region_id='+region_id+'&department_id='+department_id+'';
	ajax_loadContent('selectDepartmentTd', url);
	}
function getSupervisors(supervisor_id,department_id) {
    if(!department_id){
        department_id = document.getElementById('department_id').value;
    }
    var url = 'ajax.php?action=get_supervisiors&department_id='+department_id+'&supervisor_id='+supervisor_id+'';
    ajax_loadContent('selectSupervisorTd', url);
    }
function getZips() {
    var region_id = document.getElementById('region_id').value;
    var url = 'ajax.php?action=get_zips&region_id='+region_id+'';
    ajax_loadContent('selectZipTd', url);
    }