--- /dev/null
+function checkbox_check_all(cb_name, prefix, start, end) {
+ var i;
+
+ var control = document.getElementsByName(cb_name)[0];
+ if (!control)
+ return;
+
+ var checked = control.checked;
+
+ for (i = start; i <= end; i++) {
+ control = document.getElementsByName(prefix + i)[0];
+ if (control)
+ control.checked = checked;
+ }
+}