--- ./app/design/frontend/base/default/template/page/1column.phtml	2011-02-09 17:24:38.000000000 +0100
+++ ./app/design/frontend/default/default/template/page/1column.phtml	2011-02-09 17:25:45.000000000 +0100
@@ -47,6 +47,13 @@
                     <?php echo $this->getChildHtml('global_messages') ?>
                     <?php echo $this->getChildHtml('content') ?>
                 </div>
+                <div class="back-button">
+                    <button onclick="history.back();" class="button" title="<?php echo $this->__('Back') ?>" type="button">
+                        <span>
+                            <span><?php echo $this->__('Back') ?></span>
+                        </span>
+                    </button>
+                </div>
             </div>
         </div>
         <?php echo $this->getChildHtml('footer') ?>