Index: t3lib/class.t3lib_browsetree.php
===================================================================
--- t3lib/class.t3lib_browsetree.php	(Revision 7049)
+++ t3lib/class.t3lib_browsetree.php	(Arbeitskopie)
@@ -167,6 +167,23 @@
 		}
 		return $title;
 	}
+
+ 	/**
+	 * Adds a red "+" to the input string, $str, if the field "php_tree_stop" in the $row (pages) is set
+	 *
+	 * @param	string		Input string, like a page title for the tree
+	 * @param	array		record row with "php_tree_stop" field
+	 * @return	string		Modified string
+	 * @access private
+	 */
+	function wrapStop($str, $row)	{
+		if ($row['php_tree_stop']) {
+			$str .= '<span class="typo3-red">
+								<a href="' . htmlspecialchars(t3lib_div::linkThisScript(array('setTempDBmount' => $row['uid']))).'" class="typo3-red">+</a>
+							</span>';
+		}
+		return $str;
+	}		
 }
 
 if (defined('TYPO3_MODE') && $TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['t3lib/class.t3lib_browsetree.php'])	{
Index: t3lib/class.t3lib_treeview.php
===================================================================
--- t3lib/class.t3lib_treeview.php	(Revision 7049)
+++ t3lib/class.t3lib_treeview.php	(Arbeitskopie)
@@ -547,7 +547,7 @@
 	 */
 	function wrapStop($str,$row)	{
 		if ($row['php_tree_stop'])	{
-			$str.='<span class="typo3-red">+ </span>';
+			$str.='<span class="typo3-red"><a href="'.htmlspecialchars(t3lib_div::linkThisScript(array('setTempDBmount' => $row['uid']))).'" class="typo3-red">+</a> </span>';
 		}
 		return $str;
 	}
Index: typo3/browse_links.php
===================================================================
--- typo3/browse_links.php	(Revision 7049)
+++ typo3/browse_links.php	(Arbeitskopie)
@@ -133,6 +133,23 @@
 	 */
 	function main()	{
 
+		// Clear temporary DB mounts
+		$tmpMount = t3lib_div::_GET('setTempDBmount');
+		if (isset($tmpMount)) {
+			$GLOBALS['BE_USER']->setAndSaveSessionData('pageTree_temporaryMountPoint',intval($tmpMount));
+		}
+
+		// Set temporary DB mounts
+		$tempDBmount = intval($GLOBALS['BE_USER']->getSessionData('pageTree_temporaryMountPoint'));
+		if ($tempDBmount) {
+	 		$altMountPoints = $tempDBmount;
+		}
+		
+ 		if ($altMountPoints) {
+ 			$GLOBALS['BE_USER']->groupData['webmounts'] = implode(',', array_unique(t3lib_div::intExplode(',', $altMountPoints)));
+ 			$GLOBALS['WEBMOUNTS'] = $GLOBALS['BE_USER']->returnWebmounts();
+ 		}
+
 		$this->content = '';
 
 			// look for alternativ mountpoints
Index: typo3/class.browse_links.php
===================================================================
--- typo3/class.browse_links.php	(Revision 7049)
+++ typo3/class.browse_links.php	(Arbeitskopie)
@@ -1405,6 +1405,21 @@
 				$pagetree->thisScript = $this->thisScript;
 				$tree=$pagetree->getBrowsableTree();
 				$cElements = $this->expandPage();
+
+				// Outputting Temporary DB mount notice:
+				if (intval($GLOBALS['BE_USER']->getSessionData('pageTree_temporaryMountPoint')))	{
+					$link = '<a href="' . htmlspecialchars(t3lib_div::linkThisScript(array('setTempDBmount' => 0))) . '">' .
+										$LANG->sl('LLL:EXT:lang/locallang_core.xml:labels.temporaryDBmount', 1) .
+									'</a>';
+					$flashMessage = t3lib_div::makeInstance(
+						't3lib_FlashMessage',
+						$link,
+						'',
+						t3lib_FlashMessage::INFO
+					);
+					$dbmount = $flashMessage->render();
+				}
+
 				$content.= '
 
 			<!--
@@ -1412,7 +1427,7 @@
 			-->
 					<table border="0" cellpadding="0" cellspacing="0" id="typo3-linkPages">
 						<tr>
-							<td class="c-wCell" valign="top">'.$this->barheader($GLOBALS['LANG']->getLL('pageTree').':').$tree.'</td>
+							<td class="c-wCell" valign="top">'.$this->barheader($GLOBALS['LANG']->getLL('pageTree').':').$dbmount.$tree.'</td>
 							<td class="c-wCell" valign="top">'.$cElements.'</td>
 						</tr>
 					</table>
Index: typo3/sysext/rtehtmlarea/mod3/browse_links.php
===================================================================
--- typo3/sysext/rtehtmlarea/mod3/browse_links.php	(Revision 7049)
+++ typo3/sysext/rtehtmlarea/mod3/browse_links.php	(Arbeitskopie)
@@ -67,6 +67,19 @@
 	function main()	{
 			// Setting alternative web browsing mounts (ONLY local to browse_links.php this script so they stay "read-only")
 		$altMountPoints = trim($GLOBALS['BE_USER']->getTSConfigVal('options.pageTree.altElementBrowserMountPoints'));
+
+		// Clear temporary DB mounts
+		$tmpMount = t3lib_div::_GET('setTempDBmount');
+		if (isset($tmpMount)) {
+			$GLOBALS['BE_USER']->setAndSaveSessionData('pageTree_temporaryMountPoint',intval($tmpMount));
+		}
+
+		// Set temporary DB mounts
+		$tempDBmount = intval($GLOBALS['BE_USER']->getSessionData('pageTree_temporaryMountPoint'));
+		if ($tempDBmount) {
+	 		$altMountPoints = $tempDBmount;
+		}
+
 		if ($altMountPoints) {
 			$GLOBALS['BE_USER']->groupData['webmounts'] = implode(',', array_unique(t3lib_div::intExplode(',', $altMountPoints)));
 			$GLOBALS['WEBMOUNTS'] = $GLOBALS['BE_USER']->returnWebmounts();
Index: typo3/sysext/rtehtmlarea/mod3/class.tx_rtehtmlarea_browse_links.php
===================================================================
--- typo3/sysext/rtehtmlarea/mod3/class.tx_rtehtmlarea_browse_links.php	(Revision 7049)
+++ typo3/sysext/rtehtmlarea/mod3/class.tx_rtehtmlarea_browse_links.php	(Arbeitskopie)
@@ -822,14 +822,30 @@
 				$pagetree->addField('nav_title');
 				$tree=$pagetree->getBrowsableTree();
 				$cElements = $this->expandPage();
-				$content.= '
+
+
+				// Outputting Temporary DB mount notice:
+				if (intval($GLOBALS['BE_USER']->getSessionData('pageTree_temporaryMountPoint')))	{
+					$link = '<a href="' . htmlspecialchars(t3lib_div::linkThisScript(array('setTempDBmount' => 0))) . '">' .
+										$LANG->sl('LLL:EXT:lang/locallang_core.xml:labels.temporaryDBmount', 1) .
+									'</a>';
+					$flashMessage = t3lib_div::makeInstance(
+						't3lib_FlashMessage',
+						$link,
+						'',
+						t3lib_FlashMessage::INFO
+					);
+					$dbmount = $flashMessage->render();
+				}
+				
+				$content .= '
 			<!--
 				Wrapper table for page tree / record list:
 			-->
 					<table border="0" cellpadding="0" cellspacing="0" id="typo3-linkPages">
 						<tr>
-							<td class="c-wCell" valign="top">'.$this->barheader($LANG->getLL('pageTree').':').$tree.'</td>
-							<td class="c-wCell" valign="top">'.$cElements.'</td>
+							<td class="c-wCell" valign="top">' . $this->barheader($LANG->getLL('pageTree') . ':') . $dbmount . $tree . '</td>
+							<td class="c-wCell" valign="top">' . $cElements . '</td>
 						</tr>
 					</table>
 					';