fixed.

based on standard theme.

theme/oceanblue/header.html

@@ -32,10 +32,10 @@
 <?php } ?>
     <div class="clearer">&nbsp;</div>
 <?php if ($navigation) { // This is the navigation table with breadcrumbs  ?>
-    <div class="navbar">
+    <table class="navbar"><tr><td>
         <div class="breadcrumb"><?php print_navigation("$navigation"); ?></div>
         <div class="navbutton"><?php echo $button; ?></div>
-    </div>
+    </td></tr></table>
 <?php } else if ($heading) { // If no navigation, but a heading, then print a line  
 ?>
         <hr size="1" noshade="noshade" />

theme/oceanblue/styles_layout.css

@@ -219,6 +219,7 @@ table.formtable tbody th
   height:1.3em;
   border-width:1px;
   border-style:solid;
+  width:100%;
 }
 
 .navbar .breadcrumb {