diff --git a/projects/samskivert/src/java/com/samskivert/swing/util/DialogUtil.java b/projects/samskivert/src/java/com/samskivert/swing/util/DialogUtil.java
new file mode 100644
index 00000000..f1e6fde6
--- /dev/null
+++ b/projects/samskivert/src/java/com/samskivert/swing/util/DialogUtil.java
@@ -0,0 +1,82 @@
+//
+// $Id: DialogUtil.java,v 1.1 2002/07/09 17:48:13 ray Exp $
+
+package com.samskivert.swing.util;
+
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.Container;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+
+import com.samskivert.swing.JInternalDialog;
+
+/**
+ * Utility methods for dialogs.
+ */
+public class DialogUtil
+{
+    /**
+     * Creates and shows an internal dialog with the specified panel.
+     */
+    public static JInternalDialog createDialog (JFrame frame, JPanel content)
+    {
+        JInternalDialog dialog = new JInternalDialog(frame);
+        setContent(dialog, content);
+        SwingUtil.centerComponent(frame, dialog);
+        dialog.showDialog();
+        return dialog;
+    }
+
+    /**
+     * Change the content of the internal dailog.
+     */
+    public static void setContent (JInternalDialog dialog, JPanel content)
+    {
+        Container holder = dialog.getContentPane();
+        holder.removeAll();
+        holder.add(content, BorderLayout.CENTER);
+        dialog.pack();
+    }
+
+    /**
+     * Find the internal dialog that is a superparent of the specified
+     * component.
+     */
+    public static JInternalDialog getInternalDialog (Component any)
+    {
+        Component parent = any;
+        while (parent != null && !(parent instanceof JInternalDialog)) {
+            parent = parent.getParent();
+        }
+
+        return (JInternalDialog) parent;
+    }
+
+    /**
+     * Invalidate and resize the entire dialog, given any component in it.
+     */
+    public static void invalidateDialog (Component any)
+    {
+        JInternalDialog dialog = getInternalDialog(any);
+        invalidateChildren(dialog);
+
+        dialog.resize(dialog.getPreferredSize());
+    }
+
+    /**
+     * Invalidate all the children of the specified container.
+     */
+    protected static void invalidateChildren (Container c)
+    {
+        int numkids = c.getComponentCount();
+        for (int ii=0; ii < numkids; ii++) {
+            Component child = c.getComponent(ii);
+            if (child instanceof Container) {
+                invalidateChildren((Container) child);
+            }
+            child.invalidate();
+        }
+    }
+}