+function info_onlyifknown_isvisible()
+{
+ var vis = 'inherit';
+ var arr = fieldify_get_dom_element([$('info')], 'friend');
+ var obj = null;
+
+ for (var k = 0 ; k < arr.length ; k++) {
+ if (arr[k].checked == true) {
+ obj = arr[k];
+ break;
+ }
+ }
+ if (obj == null) {
+ return false;
+ }
+
+ if (obj.value == 'black' || obj.value == 'unknown') {
+ vis = 'hidden';
+ }
+ $('info').getElementsByClassName('onlyifknown_gid')[0].style.visibility = vis;
+ return true;
+}