diff --git a/presentation/lookAndFeel/knowledgeTree/documentmanagement/collaborationRollbackBL.php b/presentation/lookAndFeel/knowledgeTree/documentmanagement/collaborationRollbackBL.php
new file mode 100644
index 0000000..a89bebd
--- /dev/null
+++ b/presentation/lookAndFeel/knowledgeTree/documentmanagement/collaborationRollbackBL.php
@@ -0,0 +1,68 @@
+<?php	
+
+/**
+* Business logic used for the rollback of a collaboration step
+* 
+* 
+*/
+
+require_once("../../../../config/dmsDefaults.php");
+
+require_once("$default->fileSystemRoot/lib/security/permission.inc");
+
+require_once("$default->fileSystemRoot/lib/email/Email.inc");
+
+require_once("$default->fileSystemRoot/lib/users/User.inc");
+
+require_once("$default->fileSystemRoot/lib/documentmanagement/PhysicalDocumentManager.inc");
+require_once("$default->fileSystemRoot/lib/documentmanagement/DocumentTransaction.inc");
+require_once("$default->fileSystemRoot/lib/documentmanagement/Document.inc");
+
+require_once("$default->fileSystemRoot/lib/foldermanagement/FolderCollaboration.inc");
+require_once("$default->fileSystemRoot/lib/foldermanagement/FolderUserRole.inc");
+require_once("$default->fileSystemRoot/lib/roles/Role.inc");
+require_once("$default->fileSystemRoot/lib/foldermanagement/Folder.inc");
+
+require_once("$default->fileSystemRoot/presentation/lookAndFeel/knowledgeTree/documentmanagement/documentUI.inc");
+require_once("$default->fileSystemRoot/presentation/lookAndFeel/knowledgeTree/documentmanagement/collaborationRollbackUI.inc");
+require_once("$default->fileSystemRoot/presentation/lookAndFeel/knowledgeTree/foldermanagement/folderUI.inc");
+
+if (checkSession()) {
+    if (isset($fDocumentID)) {
+		if (Document::userIsPerformingCurrentCollaborationStep($fDocumentID)) {	
+			if (isset($fForStore)) {
+				//user has entered a comment
+				//create the transaction and rollback the step
+				$oDocumentTransaction = & new DocumentTransaction($fDocumentID, $fComment, COLLAB_ROLLBACK);
+				if ($oDocumentTransaction->create()) {					
+					Document::rollbackCollaborationStep($fDocumentID, $fComment);					
+					redirect("$default->rootUrl/control.php?action=viewDocument&fDocumentID=$fDocumentID");
+				} else {
+					$oDocument = Document::get($fDocumentID);
+					require_once("$default->fileSystemRoot/presentation/webpageTemplate.inc");
+					$oPatternCustom = & new PatternCustom();
+					$oPatternCustom->setHtml(getPage($oDocument->getFolderID(), $oDocument->getID(), $oDocument->getName()));
+					$main->setCentralPayload($oPatternCustom);
+					$main->setHasRequiredFields(true);
+					$main->setErrorMessage("An error occured while creating the document transaction");
+					$main->setFormAction($_SERVER["PHP_SELF"] . "?fDocumentID=$fDocumentID&fForStore=1");
+					$main->render();
+				}				
+			} else {
+				$oDocument = Document::get($fDocumentID);
+				require_once("$default->fileSystemRoot/presentation/webpageTemplate.inc");
+				$oPatternCustom = & new PatternCustom();
+				$oPatternCustom->setHtml(getPage($oDocument->getFolderID(), $oDocument->getID(), $oDocument->getName()));
+				$main->setCentralPayload($oPatternCustom);
+				$main->setHasRequiredFields(true);
+				$main->setFormAction($_SERVER["PHP_SELF"] . "?fDocumentID=$fDocumentID&fForStore=1");
+				$main->render();
+			}		
+		} else { 
+			redirect("$default->rootUrl/control.php?action=viewDocument&fDocumentID=$fDocumentID");
+		}
+	}
+}
+
+
+?>
diff --git a/presentation/lookAndFeel/knowledgeTree/documentmanagement/collaborationRollbackUI.inc b/presentation/lookAndFeel/knowledgeTree/documentmanagement/collaborationRollbackUI.inc
new file mode 100644
index 0000000..cd03e21
--- /dev/null
+++ b/presentation/lookAndFeel/knowledgeTree/documentmanagement/collaborationRollbackUI.inc
@@ -0,0 +1,47 @@
+<?php
+
+function getDocumentPath($iFolderID, $iDocumentID, $sDocumentName) {
+    global $default;
+	$sSectionName = $default->siteMap->getSectionName(substr($_SERVER["PHP_SELF"], strlen($default->rootUrl), strlen($_SERVER["PHP_SELF"])));
+	$sTDBGColour = $default->siteMap->getSectionColour($sSectionName, "td");	
+    $sDocumentPath = displayFolderPathLink(Folder::getFolderPathAsArray($iFolderID), Folder::getFolderPathNamesAsArray($iFolderID), "$default->rootUrl/control.php?action=browse") . " > <a href=\"$default->rootUrl/presentation/lookAndFeel/knowledgeTree/documentmanagement/viewBL.php?fDocumentID=" . $iDocumentID . "&fForInlineView=1\" target=\"View document\">" . $sDocumentName . "</a>";
+    return "<table border=0 cellpadding=\"5\" width = 100%><tr><td bgcolor=\"$sTDBGColour\">$sDocumentPath</td></tr></table>\n";
+}
+
+function getPage($iFolderID, $iDocumentID, $sDocumentName) {
+	global $default;
+	$sToRender = getDocumentPath($iFolderID, $iDocumentID, $sDocumentName);	
+	$sToRender .= "<p>You have chosen to reject the previous collaboration step for the document, '$sDocumentName'. " .
+					"Please enter a valid reason</p>\n";	
+	$sToRender .= "<br>\n";
+	$sToRender .= "<table>\n";
+	$sToRender .= "<tr>\n";
+	$sToRender .= "<td><b>Comment<b></td>\n";
+	$sToRender .= "</tr>\n";
+	$sToRender .= "<tr>\n";
+	$sToRender .= "<td><textarea cols=\"40\" rows=\"5\" name=\"fComment\"></textarea></td>\n";	
+	$sToRender .= "</tr>\n";
+	$sToRender .= "</table>\n";
+	
+	$sToRender .= "<input type=\"image\" src=\"$default->graphicsUrl/widgets/done.gif\" border=\"0\" />\n";
+	$sToRender .= "<a href=\"$default->rootUrl/control.php?action=viewDocument&fDocumentID=$iDocumentID\"><img src=\"$default->graphicsUrl/widgets/cancel.gif\" border=\"0\" /></a>\n";
+	
+	
+	
+	return $sToRender . getValidationJavaScript();
+}
+
+function getValidationJavaScript() {
+	$sToRender = "\n\n<SCRIPT LANGUAGE=\"javascript\">\n ";
+	$sToRender .= "<!--\n";		
+	$sToRender .= "function validateForm(theForm) {\n";	
+	$sToRender .= "\tif (!(validRequired(document.MainForm.fComment, 'Comment'))) {\n";
+	$sToRender .= "\t\treturn false;\n\t}\n";
+	$sToRender .= "\tdocument.MainForm.submit();\n}\n";
+	$sToRender .= "-->\n";
+	$sToRender .= "</SCRIPT>\n\n";
+	return $sToRender;
+
+}
+
+?>