diff --git a/phpgwapi/inc/class.html.inc.php b/phpgwapi/inc/class.html.inc.php
index 9ed4006ca0..9779bc3682 100644
--- a/phpgwapi/inc/class.html.inc.php
+++ b/phpgwapi/inc/class.html.inc.php
@@ -1049,4 +1049,119 @@ class html
 		}
 		return $html;
 	}
+	
+	/**
+	* tree widget using dhtmlXtree
+	*
+	* Code inspired by Lars's Felamimail uiwidgets::createFolderTree()
+	*
+	* @author Lars Kneschke <lars-AT-kneschke.de> original code in felamimail
+	* @param array $_folders array of folders: pairs path => node (string label or array with keys: label, (optional) image, (optional) title, (optional) checked)
+	* @param string $_selected path of selected folder
+	* @param mixed $_topFolder=false node of topFolder or false for none
+	* @param string $_onNodeSelect='alert' js function to call if node gets selected
+	* @param string $_divId='foldertree' id of the div
+	* @param string $_divClass='' css class of the div
+	* @param string $_leafImage='' default image of a leaf-node, ''=default of foldertree, set it eg. 'folderClosed.gif' to show leafs as folders
+	* @param boolean/string $_onCheckHandler=false string with handler-name to display a checkbox for each folder, or false (default)
+	* @param string $delimiter='/' path-delimiter, default /
+	*
+	* @return string the html code, to be added into the template
+	*/
+	function tree($_folders,$_selected,$_topFolder=false,$_onNodeSelect="null",$_divId='foldertree',$_divClass='',$_leafImage='',$_onCheckHandler=false,$delimiter='/')
+	{
+		$folderImageDir = $GLOBALS['egw_info']['server']['webserver_url'].'/phpgwapi/templates/default/images/';
+		
+		$html = $this->div("\n",'id="'.$_divId.'"',$_divClass);
+
+		static $tree_initialised=false;
+		if (!$tree_initialised)
+		{
+			$html .= '<link rel="STYLESHEET" type="text/css" href="'.$GLOBALS['egw_info']['server']['webserver_url'].'/phpgwapi/js/dhtmlxtree/css/dhtmlXTree.css">'."\n";
+			$html .= "<script type='text/javascript' src='{$GLOBALS['egw_info']['server']['webserver_url']}/phpgwapi/js/dhtmlxtree/js/dhtmlXCommon.js'></script>\n";
+			$html .= "<script type='text/javascript' src='{$GLOBALS['egw_info']['server']['webserver_url']}/phpgwapi/js/dhtmlxtree/js/dhtmlXTree.js'></script>\n";
+			$tree_initialised = true;
+		}
+		$html .= "<script type='text/javascript'>\n";
+		$html .= "tree=new dhtmlXTreeObject('$_divId','100%','100%',0);\n";
+		$html .= "tree.setImagePath('$folderImageDir/dhtmlxtree/');\n";
+
+		if($_onCheckHandler)
+		{
+			$html .= "tree.enableCheckBoxes(1);\n";
+			$html .= "tree.setOnCheckHandler('$_onCheckHandler');\n";
+		}
+		
+		$top = 0;
+		if ($_topFolder)
+		{
+			$top = '--topfolder--';
+			$topImage = '';
+			if (is_array($_topFolder))
+			{
+				$label = $_topFolder['label'];
+				if (isset($_topFolder['image']))
+				{
+					$topImage = $_topFolder['image'];
+				}
+			}
+			else
+			{
+				$label = $_topFolder;
+			}	
+			$html .= "\ntree.insertNewItem(0,'$top','".addslashes($label)."',$_onNodeSelect,'$topImage','$topImage','$topImage','CHILD,TOP');\n";
+
+			if (is_array($_topFolder) && isset($_topFolder['title']))
+			{
+				$html .= "tree.setItemText('$top','".addslashes($label)."','".addslashes($_topFolder['title'])."');\n";
+			}
+		}
+		// evtl. remove leading delimiter
+		if ($_selected{0} == $delimiter) $_selected = substr($_selected,1);
+		foreach($_folders as $path => $data)
+		{
+			if (!is_array($data))
+			{
+				$data = array('label' => $data);
+			}
+			$image1 = $image2 = $image3 = '0';
+			if (isset($data['image']))
+			{
+				$image1 = $image2 = $image3 = "'".$data['image']."'";
+			}
+			// evtl. remove leading delimiter
+			if ($path{0} == $delimiter) $path = substr($path,1);
+			$folderParts = explode($delimiter,$path);
+			
+			//get rightmost folderpart
+			$label = array_pop($folderParts);
+			if (isset($data['label'])) $label = $data['label'];
+			
+			// the rest of the array is the name of the parent
+			$parentName = implode((array)$folderParts,$delimiter);
+			if(empty($parentName)) $parentName = $top;
+			
+			$entryOptions = 'CHILD,CHECKED';
+			// highlight currently item
+			if ($_selected === $path)
+			{
+				$entryOptions .= ',SELECT';
+			}
+			$html .= "tree.insertNewItem('".addslashes($parentName)."','".addslashes($path)."','".addslashes($label).
+				"',$_onNodeSelect,$image1,$image2,$image3,'$entryOptions');\n";
+			if (isset($data['title']))
+			{
+				$html .= "tree.setItemText('".addslashes($path)."','".addslashes($label)."','".addslashes($data['title'])."');\n";
+			}
+			if($_displayCheckBox)
+			{
+				$html .= "tree.setCheck('".addslashes($path)."','".(int)$data['checked']."');";
+			}
+		}
+		$html .= "tree.closeAllItems(0);\n";
+		$html .= "tree.openItem('".($_selected ? addslashes($_selected) : $top)."');\n";
+		$html .= "</script>\n";
+		
+		return $html;
+	}
 }