diff --git a/panda/src/gui/guiCollection.cxx b/panda/src/gui/guiCollection.cxx
new file mode 100644
index 0000000000..38fc2a8c88
--- /dev/null
+++ b/panda/src/gui/guiCollection.cxx
@@ -0,0 +1,70 @@
+// Filename: guiCollection.cxx
+// Created by:  cary (07Mar01)
+// 
+////////////////////////////////////////////////////////////////////
+
+#include "guiCollection.h"
+
+TypeHandle GuiCollection::_type_handle;
+
+void GuiCollection::recompute_frame(void) {
+  GuiItem::recompute_frame();
+
+  freeze();
+
+  for (Items::iterator i=_items.begin(); i!=_items.end(); ++i)
+    (*i)->recompute_frame();
+
+  thaw();
+}
+
+void GuiCollection::set_priority(GuiLabel* l, const GuiItem::Priority p) {
+  for (Items::iterator i=_items.begin(); i!=_items.end(); ++i)
+    (*i)->set_priority(l, p);
+}
+
+GuiCollection::GuiCollection(const string& name) : GuiItem(name) {
+}
+
+GuiCollection::~GuiCollection(void) {
+  this->unmanage();
+}
+
+int GuiCollection::freeze(void) {
+  int result = 0;
+
+  for (Items::iterator i=_items.begin(); i!=_items.end(); ++i) {
+    int count = (*i)->freeze();
+    result = max(result, count);
+  }
+  return result;
+}
+
+int GuiCollection::thaw(void) {
+  int result = 0;
+
+  for (Items::iterator i=_items.begin(); i!=_items.end(); ++i) {
+    int count = (*i)->thaw();
+    result = max(result, count);
+  }
+  return result;
+}
+
+void GuiCollection::add_item(GuiItem* item) {
+  bool found = false;
+  for (Items.iterator i=_items.begin(); i!=_items.end(); ++i)
+    if ((*i) == item)
+      found = true;
+  if (!found)
+    _items.push_back(item);
+  this->recompute();
+}
+
+void GuiCollection::remove_item(GuiItem* item) {
+  Items::iterator i = _items.find(item);
+  if (i == _items.end())
+    return;
+  item->unmanage();
+  _items.erase(i);
+  this->recompute();
+}