diff --git a/plugins/ktstandard/documentpreview/documentPreview.php b/plugins/ktstandard/documentpreview/documentPreview.php
new file mode 100644
index 0000000..96911d1
--- /dev/null
+++ b/plugins/ktstandard/documentpreview/documentPreview.php
@@ -0,0 +1,299 @@
+<?php
+/*
+ * $Id: $
+ *
+ * The contents of this file are subject to the KnowledgeTree
+ * Commercial Editions On-Premise License ("License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.knowledgetree.com/about/legal/
+ * The terms of this license may change from time to time and the latest
+ * license will be published from time to time at the above Internet address.
+ *
+ * This edition of the KnowledgeTree software
+ * is NOT licensed to you under Open Source terms.
+ * You may not redistribute this source code.
+ * For more information please see the License above.
+ *
+ * (c) 2008 KnowledgeTree Inc.
+ * Portions copyright The Jam Warehouse Software (Pty) Ltd;
+ * All Rights Reserved.
+ *
+ */
+
+$kt_dir = $_REQUEST['kt_dir'];
+require_once($kt_dir.'/config/dmsDefaults.php');
+
+class DocumentPreview {
+    var $_oDocument;
+    var $_IDocId;
+    var $_iMimeId;
+    var $_oFolder;
+    var $_iFolderId;
+
+    /**
+     * Constructer - creates the document object
+     *
+     * @param int $iDocumentId The document Id
+     * @return
+     */
+    function DocumentPreview($iId, $type = 'document'){
+        if($type == 'folder'){
+            // $type should never be a folder.
+            $this->_oDocument = false;
+            return;
+        }
+        $oDocument = Document::get($iId);
+
+        if(PEAR::isError($oDocument)){
+            $this->_oDocument = false;
+            return;
+        }
+
+        $this->_oDocument = $oDocument;
+        $this->_IDocId = $iId;
+        $this->_iMimeId = $oDocument->getMimeTypeID();
+        $this->imageMimeTypes = array(10, 27, 37, 38, 39, 71);
+    }
+
+    /**
+     * Get the document title for the preview
+     *
+     * @return string The document title and mime icon
+     */
+    function getTitle(){
+        if($this->_oDocument === false){
+            return '<b>'._kt('Error').'</b>';
+        }
+        GLOBAL $default;
+        $sIcon = '';
+
+        $sTitle = htmlentities($this->_oDocument->getName(), ENT_NOQUOTES, 'utf-8');
+        $iLen = strlen($sTitle);
+
+        if($iLen > 60){
+            $sFull = $sTitle;
+            if($iLen >= 99){
+                $sTitle = substr($sTitle, 0, 97).'...';
+            }
+            $sTitle = '<h4 title="'.$sFull.'">'.$sTitle.'</h4>';
+        }else{
+            $sTitle = '<h2>'.$sTitle.'</h2>';
+        }
+
+        // Get the icon
+        $sIcon = $this->getMimeIcon();
+
+        $sTitle = '<div class="previewhd">
+                <div style="float:left">'.$sIcon.'</div>
+                <div style="float:left; width: 375px;">'.$sTitle.'</div>
+            </div>';
+        return $sTitle;
+    }
+
+    /**
+     * Display the mime type icon.
+     *
+     * @param unknown_type $iMimeId
+     * @return unknown
+     */
+    function getMimeIcon() {
+        global $default;
+        $iMimeId = $this->_iMimeId;
+
+        $sIconPath = $this->getIconPath();
+        $sIconPath = $default->rootUrl.$sIconPath;
+        return "<img src='$sIconPath' title='$sTitle' />&nbsp;&nbsp;";
+    }
+
+    /**
+     * If there isn't an icon for the given extension, find a generic icon for the type else return the default icon.
+     *
+     * @param string $ext
+     * @return string
+     */
+    function checkForGeneric($ext) {
+        if(in_array($ext, array('py','php'))){
+            return 'generic/source';
+        }
+        if(in_array($ext, array('odt','sxw', 'ott', 'sxt'))){
+            return 'generic/wordprocessing';
+        }
+        if(in_array($ext, array('ods','ots', 'sxc', 'stc'))){
+            return 'spreadsheet';
+        }
+        if(in_array($ext, array('odp','otp', 'sxi', 'sti'))){
+            return 'generic/pres';
+        }
+        if(in_array($ext, array('mp3','m4a'))){
+            return 'generic/sound';
+        }
+        if(in_array($ext, array('m4v'))){
+            return 'generic/video';
+        }
+        return 'default';
+    }
+
+    /**
+     * Get the path to the correct icon for the mime type
+     *
+     * @return string
+     */
+    function getIconPath() {
+
+        $sIconPath = KTMime::getIconPath($this->_iMimeId);
+
+        // Get mime type icon
+        $sIconPath = '/resources/mimetypes/big/'.$sIconPath.'.png';
+
+        if(!file_exists(KT_DIR.$sIconPath)){
+            // See if there is an icon for the extension
+            $sMimeType = KTMime::getMimeTypeName($this->_iMimeId);
+            $aMimeInfo = KTMime::getFriendlyNameAndExtension($sMimeType);
+            if(!PEAR::isError($aMimeInfo) && !empty($aMimeInfo)){
+                $sExt = $aMimeInfo[0]['filetypes'];
+                $sIconPath = '/resources/mimetypes/big/'.$sExt.'.png';
+
+                if(!file_exists(KT_DIR.$sIconPath)){
+                    $generic = $this->checkForGeneric($sExt);
+                    // if all else fails, use the default icon
+                    $sIconPath = '/resources/mimetypes/big/'.$generic.'.png';
+                }
+            }
+        }
+        return $sIconPath;
+    }
+
+    /**
+     * Render the info box content
+     *
+     * @return string
+     */
+    function renderPreview(){
+        if($this->_oDocument === false){
+            return '<p>'._kt('A problem occured while loading the document preview.').'</p>';
+        }
+
+        $sInfo = $this->getMetadata();
+
+        return '<div id="preview" class="preview" onclick="javascript: destroyPanel();">'.$sInfo.'</div>';
+    }
+
+    /**
+     * Create a table of the document metadata.
+     * Hard coded for the moment
+     *
+     * @return unknown
+     */
+    function getMetadata(){
+        /* Get document info */
+
+        // Filename
+        $sFilenameLb = _kt('Document Filename: ');
+        $sFilename = $this->_oDocument->getFileName();
+
+        // Mime type
+        $sMimeTypeLb = _kt('File is a: ');
+        $iMimeId = $this->_oDocument->getMimeTypeID();
+        $sMimeType = KTMime::getMimeTypeName($iMimeId);
+        $sMimeType = KTMime::getFriendlyNameForString($sMimeType);
+
+        // Version
+        $sVersionLb = _kt('Document Version: ');
+        $iVersion = $this->_oDocument->getVersion();
+
+        // Created by
+        $sCreatedByLb = _kt('Created by: ');
+        $iCreatorId = $this->_oDocument->getCreatorID();
+        $sCreated = $this->_oDocument->getCreatedDateTime();
+        $oCreator = User::get($iCreatorId);
+        $sCreatedBy = $oCreator->getName().' ('.$sCreated.')';
+
+        // Owned by
+        $sOwnedByLb =  _kt('Owned by: ');
+        $iOwnedId = $this->_oDocument->getOwnerID();
+        $oOwner = User::get($iOwnedId);
+        $sOwnedBy = $oOwner->getName();
+
+        // Last update by
+        $iModifiedId = $this->_oDocument->getModifiedUserId();
+        $sLastUpdatedByLb = ''; $sLastUpdatedBy = '';
+        if(!empty($iModifiedId)){
+            $sLastUpdatedByLb = _kt('Last updated by: ');
+            $sModified = $this->_oDocument->getLastModifiedDate();
+            $oModifier = User::get($iModifiedId);
+            $sLastUpdatedBy = $oModifier->getName().' ('.$sModified.')';
+        }
+
+        // Document type
+        $sDocTypeLb = _kt('Document Type: ');
+        $iDocTypeId = $this->_oDocument->getDocumentTypeID();
+        $oDocType = DocumentType::get($iDocTypeId);
+        $sDocType = $oDocType->getName();
+
+        // Workflow
+        $iWFId = $this->_oDocument->getWorkflowId();
+        $sWF = ''; $sWFLb = '';
+        if(!empty($iWFId)){
+            $sWFLb = _kt('Workflow: ');
+            $iWFStateId = $this->_oDocument->getWorkflowStateId();
+            $oWF = KTWorkflow::get($iWFId);
+            $sWF = $oWF->getHumanName();
+            $oWFState = KTWorkflowState::get($iWFStateId);
+            $sWF .= ' ('.$oWFState->getHumanName().')';
+        }
+
+        // Checked out by
+        $sCheckedLb = ''; $sCheckedOutBy = '';
+        if($this->_oDocument->getIsCheckedOut()){
+            $sCheckedLb = _kt('Checked out by: ');
+            $iCheckedID = $this->_oDocument->getCheckedOutUserID();
+            $oCheckedUser = User::get($iCheckedID);
+            $sCheckedOutBy = $oCheckedUser->getName();
+        }
+
+        // Id
+        $sIdLb = _kt('Document ID: ');
+        $sId = $this->_IDocId;
+
+        /* Create table */
+
+        $sInfo = "<table cellspacing='3px' cellpadding='3px'>
+            <tr><td>{$sFilenameLb}</td><td><b>{$sFilename}</b></td></tr>
+            <tr><td>{$sMimeTypeLb}</td><td><b>{$sMimeType}</b></td></tr>
+            <tr><td>{$sVersionLb}</td><td><b>{$iVersion}</b></td></tr>
+            <tr><td>{$sCreatedByLb}</td><td><b>{$sCreatedBy}</b></td></tr>
+            <tr><td>{$sOwnedByLb}</td><td><b>{$sOwnedBy}</b></td></tr>";
+
+        if(!empty($sLastUpdatedBy)){
+            $sInfo .= "<tr><td>{$sLastUpdatedByLb}</td><td><b>{$sLastUpdatedBy}</b></td></tr>";
+        }
+            $sInfo .= "<tr><td>{$sDocTypeLb}</td><td><b>{$sDocType}</b></td></tr>";
+        if(!empty($sWF)){
+            $sInfo .= "<tr><td>{$sWFLb}</td><td><b>{$sWF}</b></td></tr>";
+        }
+        if(!empty($sCheckedOutBy)){
+            $sInfo .= "<tr><td>{$sCheckedLb}</td><td><b>{$sCheckedOutBy}</b></td></tr>";
+        }
+
+            $sInfo .= "<tr><td>{$sIdLb}</td><td><b>{$sId}</b></td></tr>
+        </table>";
+
+        return $sInfo;
+    }
+}
+
+/**
+ * Get the document id and render the preview / info box
+ */
+
+$iDocumentId = $_REQUEST['fDocumentId'];
+
+$oPreview = new DocumentPreview($iDocumentId);
+
+$sTitle = $oPreview->getTitle();
+$sContent = $oPreview->renderPreview();
+
+echo $sTitle.'<br />'.$sContent;
+exit;
+?>
\ No newline at end of file
diff --git a/plugins/ktstandard/documentpreview/documentPreviewPlugin.php b/plugins/ktstandard/documentpreview/documentPreviewPlugin.php
new file mode 100644
index 0000000..1cd858d
--- /dev/null
+++ b/plugins/ktstandard/documentpreview/documentPreviewPlugin.php
@@ -0,0 +1,108 @@
+<?php
+/*
+ * $Id: $
+ *
+ * The contents of this file are subject to the KnowledgeTree
+ * Commercial Editions On-Premise License ("License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.knowledgetree.com/about/legal/
+ * The terms of this license may change from time to time and the latest
+ * license will be published from time to time at the above Internet address.
+ *
+ * This edition of the KnowledgeTree software
+ * is NOT licensed to you under Open Source terms.
+ * You may not redistribute this source code.
+ * For more information please see the License above.
+ *
+ * (c) 2008 KnowledgeTree Inc.
+ * Portions copyright The Jam Warehouse Software (Pty) Ltd;
+ * All Rights Reserved.
+ *
+ */
+
+require_once(KT_LIB_DIR . '/plugins/plugin.inc.php');
+require_once(KT_LIB_DIR . '/plugins/pluginregistry.inc.php');
+require_once(KT_LIB_DIR . '/browse/advancedcolumns.inc.php');
+
+class PreviewColumn extends AdvancedColumn {
+
+    var $namespace = 'ktcore.columns.preview';
+    var $sActivation = 'onclick';
+    var $sPluginPath = '';
+
+    function PreviewColumn() {
+        $this->label = null;
+
+        $oConfig = KTConfig::getSingleton();
+        $this->sActivation = $oConfig->get('browse/previewActivation', 'onclick');
+
+        // Get file path
+        $this->sPluginPath = 'plugins/ktstandard/documentpreview';
+    }
+
+    function renderHeader($sReturnURL) {
+        // Get the yui libraries required
+        global $main;
+
+        // Get the CSS to render the pop-up
+        $main->requireCSSResource($this->sPluginPath.'/resources/container.css');
+
+        // Get the javascript to render the document preview
+        $main->requireJSResource($this->sPluginPath.'/resources/preview.js');
+
+        return '&nbsp;';
+    }
+
+    function renderData($aDataRow) {
+        // only _ever_ show this for documents.
+        if ($aDataRow["type"] === "folder") {
+            return '&nbsp;';
+        }
+
+        $sUrl = KTUtil::kt_url().'/'.$this->sPluginPath.'/documentPreview.php';
+        $sDir = KT_DIR;
+        $iDelay = 1000; // milliseconds
+
+        $iDocumentId = $aDataRow['document']->getId();
+        $sTitle = _kt('Preview Document');
+        $sLoading = _kt('Loading...');
+
+
+        $link = '<a href = "#" class="ktAction ktPreview" id = "box_'.$iDocumentId.'" ';
+
+        if($this->sActivation == 'mouse-over'){
+            $sJs = "javascript: this.t = setTimeout('showInfo(\'$iDocumentId\', \'$sUrl\', \'$sDir\', \'$sLoading\')', $iDelay);";
+            $link .= 'onmouseover = "'.$sJs.'" onmouseout = "clearTimeout(this.t);">';
+        }else{
+            $sJs = "javascript: showInfo('$iDocumentId', '$sUrl', '$sDir', '$sLoading');";
+            $link .= 'onclick = "'.$sJs.'" title="'.$sTitle.'">';
+        }
+
+        return $link.$sTitle.'</a>';
+    }
+
+    function getName() { return _kt('Preview'); }
+}
+
+class DocumentPreviewPlugin extends KTPlugin {
+    var $sNamespace = 'document.preview.plugin';
+
+    function DocumentPreviewPlugin($sFilename = null) {
+        $res = parent::KTPlugin($sFilename);
+        $this->sFriendlyName = _kt('Document Preview Plugin');
+        return $res;
+    }
+
+    function setup() {
+        $this->registerColumn(_kt('Preview File'), 'ktcore.columns.preview', 'PreviewColumn', 'documentPreviewPlugin.php');
+
+        require_once(KT_LIB_DIR . '/templating/templating.inc.php');
+        $oTemplating =& KTTemplating::getSingleton();
+        $oTemplating->addLocation('documentpreview', '/plugins/ktstandard/documentpreview/templates', 'document.preview.plugin');
+    }
+}
+
+$oPluginRegistry =& KTPluginRegistry::getSingleton();
+$oPluginRegistry->registerPlugin('DocumentPreviewPlugin', 'document.preview.plugin', __FILE__);
+?>
diff --git a/plugins/ktstandard/documentpreview/resources/container.css b/plugins/ktstandard/documentpreview/resources/container.css
new file mode 100644
index 0000000..04dc39a
--- /dev/null
+++ b/plugins/ktstandard/documentpreview/resources/container.css
@@ -0,0 +1,131 @@
+
+/* The containing div's, in which the dialog window is created */
+
+.panel {
+	visibility:hidden;
+	position:relative;
+	left:0px;top:0px;
+	font:1em Arial;
+	background-color:transparent;
+	overflow:hidden;
+	line-height: 1.6em;
+}
+
+#info-preview {
+    padding: 10px;
+}
+
+#info-dlg {
+    visibility: hidden;
+    position: absolute;
+    top: 0px;
+}
+
+/* Styling for the dialog content */
+
+.preview {
+    padding-right: 10px;
+    padding-bottom: 0px;
+    cursor: pointer;
+    height: 250px;
+    overflow: hidden;
+    clear: both;
+}
+
+.previewhd {
+    padding-left: 10px;
+    padding-right: 10px;
+    overflow: hidden;
+    visibility: visible;
+}
+
+.previewhd h4 {
+    padding-top: 0;
+    margin-top: 0;
+    line-height: 110%;
+}
+
+.previewhd h2 {
+    padding-top: 0;
+    margin-top: 0;
+    font-family: "Lucida Grande", "Bitstream Vera Sans", Tahoma, sans-serif;
+    border-width: 0 0 0 0;
+    border-style: solid;
+    border-color: #eee;
+    font-size: large;
+    color: #333;
+}
+
+.previewhd img {
+    height: 40px;
+    width: 40px;
+}
+
+/* Override ExtJS CSS */
+
+.x-window-tc {
+	background: url(../../../resources/graphics/portlet_bg.png) repeat-x 0 0;
+	overflow:hidden;
+    zoom:1;
+}
+
+.x-window-tl {
+	background: url(../../../resources/graphics/portlet_corner_topleft.png) no-repeat 0 0;
+	padding-left:6px;
+    zoom:1;
+    z-index:1;
+    position:relative;
+}
+
+.x-window-tr {
+	background: url(graphics/portlet_corner_topright.png) no-repeat right 0;
+	padding-right:6px;
+}
+
+.x-window-bc {
+	background: #FFF;
+    zoom:1;
+}
+.x-window-bl {
+    border-left:1px solid #AFAFAF;
+    border-bottom:1px solid #AFAFAF;
+	background:  #FFF;
+	padding-left:6px;
+    zoom:1;
+}
+.x-window-br {
+    border-right:1px solid #AFAFAF;
+	background:  #FFF;
+	padding-right:6px;
+    zoom:1;
+}
+
+.x-window-ml {
+    border-left:1px solid #AFAFAF;
+	background:  #FFF;
+	padding-left:6px;
+    zoom:1;
+}
+.x-window-mr {
+    border-right:1px solid #AFAFAF;
+	background:  #FFF;
+	padding-right:6px;
+    zoom:1;
+}
+
+.x-window-mc {
+    border:1px solid #FFF;
+    border-top:1px solid #FFF;
+    padding:0;
+    margin:0;
+    font: normal 11px tahoma,arial,helvetica,sans-serif;
+    background:#FFF;
+}
+
+.x-window-body {
+    border-left:1px solid #FFF;
+    border-top:1px solid #FFF;
+    border-bottom:1px solid #FFF;
+    border-right:1px solid #FFF;
+    background: transparent;
+}
diff --git a/plugins/ktstandard/documentpreview/resources/graphics/portlet_corner_topright.png b/plugins/ktstandard/documentpreview/resources/graphics/portlet_corner_topright.png
new file mode 100644
index 0000000..57b9673
--- /dev/null
+++ b/plugins/ktstandard/documentpreview/resources/graphics/portlet_corner_topright.png
diff --git a/plugins/ktstandard/documentpreview/resources/preview.js b/plugins/ktstandard/documentpreview/resources/preview.js
new file mode 100644
index 0000000..f65a54c
--- /dev/null
+++ b/plugins/ktstandard/documentpreview/resources/preview.js
@@ -0,0 +1,73 @@
+/*
+    Create the preview / info box using an ExtJS Dialog window
+*/
+var showInfo = function(iDocId, sUrl, sDir, loading){
+
+    // Create the info box container div
+    createPanel();
+
+    showIcon = Ext.get('box_'+iDocId);
+    dialog = new Ext.Window({
+            el: 'info-dlg',
+            closeAction: 'destroy',
+            layout: 'fit',
+            shadow: false,
+            modal: true,
+            plain: false,
+            width: 500,
+            height: 300,
+            minWidth: 300,
+            minHeight: 250
+    });
+    dialog.show(showIcon.dom);
+
+    var info = document.getElementById('info-preview');
+    info.innerHTML = loading;
+
+    Ext.Ajax.request({
+        url: sUrl,
+        success: function(response) {
+            info.innerHTML = response.responseText;
+        },
+        failure: function(response) {
+            alert('Error. Couldn\'t create info box.');
+        },
+        params: {
+            fDocumentId: iDocId,
+            kt_dir: sDir
+        }
+    });
+}
+
+/*
+    Create the container div's in which the info box will be created.
+    Add the div's required by the ExtJS dialog box.
+*/
+var createPanel = function() {
+
+    if(document.getElementById('info-panel')){
+        destroyPanel();
+        p = document.getElementById('info-panel');
+        p.style.display = 'block';
+    }else{
+        p = document.getElementById('pageBody').appendChild(document.createElement('div'));
+        p.id = 'info-panel';
+    }
+
+    b = p.appendChild(document.createElement('div'));
+    b.id = 'info-dlg';
+    b.innerHTML = '<div class="x-window-header">Info Panel</div><div class="x-window-body"><div id="info-preview"></div></div>';
+}
+
+/*
+    Set the container div to empty.
+    The display must be set to none for IE, otherwise the icons under the div aren't clickable.
+*/
+var destroyPanel = function() {
+    if(dialog){
+        dialog.destroy();
+    }
+    p = document.getElementById('info-panel');
+    p.innerHTML = '';
+    p.style.display = 'none';
+}
\ No newline at end of file