$departments = array('or' => 'OR',
							  'preop' => 'PREOP',
							  'pacu' => 'PACU',
							  'colon' => 'COLON',
							  'pain' => 'PAIN',
							  'ecc' => 'ECC',
							  'eyes' => 'EYES',
							  'boffice' => 'Business Office',
							  'facops' => 'FACOPS');

function input_select($element_name, $selected, $options, $multiple = false) {
    // print out the <select> tag
    print '<select name="' . $element_name;
    // if multiple choices are permitted, add the multiple attribute
    // and add a [] to the end of the tag name
    if ($multiple) { print '[]" multiple="multiple'; }
    print '">';

    // set up the list of things to be selected
    $selected_options = array();
    if ($multiple) {
        foreach ($selected[$element_name] as $val) {
            $selected_options[$val] = true;
        }
    } else {
        $selected_options[ $selected[$element_name] ] = true;
    }

    // print out the <option> tags
    foreach ($options as $option => $label) {
        print '<option value="' . htmlentities($option) . '"';
        if ($selected_options[$option]) {
            print ' selected="selected"';
        }
        print '>' . htmlentities($label) . '</option>';
    }
    print '</select>';
}

input_select('department', $GLOBALS['departments'], $_POST);