diff --git a/code/web/app/app_achievements/class/AchAchievement_class.php b/code/web/app/app_achievements/class/AchAchievement_class.php
index 5d48d7b11..45c44ee80 100644
--- a/code/web/app/app_achievements/class/AchAchievement_class.php
+++ b/code/web/app/app_achievements/class/AchAchievement_class.php
@@ -1,21 +1,23 @@
 <?php
 	class AchAchievement extends AchList {
-		private $id;
-		private $parent;
-		private $category;
-		private $tie_race;
-		private $tie_civ;
-		private $tie_cult;
-		private $image;
-		private $name;
-		private $template;
-		private $dev;
+		use Node;
 
-		function AchAchievement(&$data) {
+		protected $parent_id;
+		protected $category;
+		protected $tie_race;
+		protected $tie_civ;
+		protected $tie_cult;
+		protected $image;
+		protected $name;
+		protected $template;
+		protected $dev;
+
+		function AchAchievement($data,$parent) {
 			global $DBc,$_USER;
-
-			$this->id = $data['aa_id'];
-			$this->parent = $data['aa_parent'];
+			
+			$this->setParent($parent);
+			$this->setID($data['aa_id']);
+			$this->parent_id = $data['aa_parent'];
 			$this->category = $data['aa_category'];
 			$this->tie_race = $data['aa_tie_race'];
 			$this->tie_civ = $data['aa_tie_civ'];
@@ -25,44 +27,27 @@
 			$this->template = $data['aal_template'];
 			$this->dev = $data['aa_dev'];
 
-			#echo $this->id;
-
 			$res = $DBc->sqlQuery("SELECT * FROM ach_perk LEFT JOIN (ach_perk_lang) ON (apl_lang='".$_USER->getLang()."' AND apl_perk=ap_id) LEFT JOIN (ach_player_perk) ON (app_perk=ap_id AND app_player='".$_USER->getID()."') WHERE ap_achievement='".$this->id."' AND ap_parent IS NULL");
 			#MISSING: or parent is done
 			$sz = sizeof($res);
 			for($i=0;$i<$sz;$i++) {
-				#echo "Z";
-				$res[$i]['this'] = $this;
 				$tmp = $this->makeChild($res[$i]);
 
-				#echo var_export($tmp,true);
-
-				
-				
 				if($tmp->isDone()) {
-					$this->child_done[] = sizeof($this->nodes);
+					$this->addDone($tmp);
 				}
 				else {
-					$this->child_open[] = sizeof($this->nodes);
+					$this->addOpen($tmp);
 				}
-				$this->nodes[] = $tmp;
-				#MISSING: divide into groups -> open/done
 			}
-
-			#echo var_export($this->child_open,true);
-			#echo "X-".$this->hasOpen();
 		}
 
-		protected function makeChild(&$a) {
-			return new AchPerk($a);
+		protected function makeChild($a) {
+			return new AchPerk($a,$this);
 		}
 
-		function getID() {
-			return $this->id;
-		}
-
-		function getParent() {
-			return $this->parent;
+		function getParentID() {
+			return $this->parent_id;
 		}
 
 		function getTieRace() {
@@ -87,14 +72,21 @@
 
 		function getValueDone() {
 			$val = 0;
-			foreach($this->child_done as $elem) {
-				$val += $this->nodes[$elem]->getValue();
+			$iter = $this->getDone();
+			while($iter->hasNext()) {
+				$curr = $this->findNodeIdx($iter->getNext());
+				$val += $curr->getValue();
 			}
 			return $val;
 		}
 
 		function getValueOpen() {
-			return $this->nodes[$this->child_open[0]]->getValue();
+			$iter = $this->getDone();
+			if($iter->hasNext()) {
+				$curr = $this->findNodeIdx($iter->getNext());
+				return $curr->getValue();
+			}
+			return 0;
 		}
 
 		function getTemplate($insert = array()) {
diff --git a/code/web/app/app_achievements/class/AchCategory_class.php b/code/web/app/app_achievements/class/AchCategory_class.php
index 55ef42c0f..d31d6eb90 100644
--- a/code/web/app/app_achievements/class/AchCategory_class.php
+++ b/code/web/app/app_achievements/class/AchCategory_class.php
@@ -1,12 +1,12 @@
 <?php
 	class AchCategory extends AchList implements Tieable {
-		private $id = false;
-		private $ties_cult;
-		private $ties_civ;
-		private $ties_cult_dev;
-		private $ties_civ_dev;
-		private $cult;
-		private $civ;
+		protected $id;
+		protected $ties_cult;
+		protected $ties_civ;
+		protected $ties_cult_dev;
+		protected $ties_civ_dev;
+		protected $cult;
+		protected $civ;
 
 		function AchCategory($id,$cult = null,$civ = null) {
 			global $DBc,$_USER;
@@ -28,17 +28,14 @@
 
 			$sz = sizeof($res);
 			for($i=0;$i<$sz;$i++) {
-				#echo "Y";
 				$tmp = $this->makeChild($res[$i]);
-				#echo var_export($tmp,true);
+				
 				if($tmp->hasOpen()) {
-					$this->child_open[] = sizeof($this->nodes);
+					$this->addOpen($tmp);
 				}
 				if($tmp->hasDone()) {
-					$this->child_done[] = sizeof($this->nodes);
+					$this->addDone($tmp);
 				}
-
-				$this->nodes[] = $tmp;
 			}
 
 			$res = $DBc->sqlQuery("SELECT count(*) as anz FROM ach_achievement WHERE aa_tie_cult IS NOT NULL AND aa_category='".$this->id."' AND aa_dev='0'");
@@ -54,8 +51,8 @@
 			$this->ties_civ_dev = $res[0]['anz'];
 		}
 
-		protected function makeChild(&$a) {
-			return new AchAchievement($a);
+		protected function makeChild($a) {
+			return new AchAchievement($a,$this);
 		}
 
 		function getID() {
diff --git a/code/web/app/app_achievements/class/AchList_abstract.php b/code/web/app/app_achievements/class/AchList_abstract.php
index 707aef425..41c2040e9 100644
--- a/code/web/app/app_achievements/class/AchList_abstract.php
+++ b/code/web/app/app_achievements/class/AchList_abstract.php
@@ -1,22 +1,39 @@
 <?php
-	abstract class AchList extends RenderNodeIterator {
+	abstract class AchList extends Parentum {
 		protected $child_done = array();
 		protected $child_open = array();
 
-		function getDone() {
-			return $this->child_done;
+		final function getDone() {
+			return new NodeIterator($this->child_done);
 		}
 
-		function getOpen() {
-			return $this->child_open;
+		final function getOpen() {
+			return new NodeIterator($this->child_open);
 		}
 
-		function hasOpen() {
+		final function hasOpen() {
 			return (sizeof($this->child_open) != 0);
 		}
 
-		function hasDone() {
+		final function hasDone() {
 			return (sizeof($this->child_done) != 0);
 		}
+
+		final function addOpen($n) {
+			$this->child_open[] = $this->addChild($n);
+		}
+
+		final function addDone($n) {
+			$this->child_done[] = $this->addChild($n);
+		}
+
+		function removeChild() {
+			$idx = $this->getIdx($id);
+			if($idx != null) {
+				unset($this->child_open[$idx]);
+				unset($this->child_done[$idx]);
+				parent::removeIdx($idx);
+			}
+		}
 	}
 ?>
\ No newline at end of file
diff --git a/code/web/app/app_achievements/class/AchMenuNode_class.php b/code/web/app/app_achievements/class/AchMenuNode_class.php
index 8d90632ae..a9112b855 100644
--- a/code/web/app/app_achievements/class/AchMenuNode_class.php
+++ b/code/web/app/app_achievements/class/AchMenuNode_class.php
@@ -1,6 +1,7 @@
 <?php
-	class AchMenuNode extends RenderNodeIterator {
-		protected $id;
+	class AchMenuNode extends Parentum {
+		use Node;
+
 		protected $parent_id;
 		protected $name;
 		protected $open;
@@ -8,10 +9,11 @@
 		protected $order;
 		protected $dev;
 
-		function AchMenuNode(&$data) {
+		function AchMenuNode($data,$parent) {
 			global $DBc,$_USER;
 
-			$this->id = $data['ac_id'];
+			$this->setParent($parent);
+			$this->setID($data['ac_id']);
 			$this->parent_id = $data['ac_parent'];
 			$this->name = $data['acl_name'];
 			$this->image = $data['ac_image'];
@@ -28,12 +30,8 @@
 			}
 		}
 
-		protected function makeChild(&$a) {
-			return new AchMenuNode($a);
-		}
-
-		function getID() {
-			return $this->id;
+		protected function makeChild($a) {
+			return new AchMenuNode($a,$this);
 		}
 
 		function getName() {
diff --git a/code/web/app/app_achievements/class/AchMenu_class.php b/code/web/app/app_achievements/class/AchMenu_class.php
index a28e807cc..cb54ce216 100644
--- a/code/web/app/app_achievements/class/AchMenu_class.php
+++ b/code/web/app/app_achievements/class/AchMenu_class.php
@@ -1,5 +1,5 @@
 <?php
-	class AchMenu extends RenderNodeIterator {
+	class AchMenu extends Parentum {
 		/*---------------------------
 			This class is the dispatcher for actual MenuNodes.
 			Since every MenuNode will only keep a list of it's children,
@@ -20,7 +20,7 @@
 			$tmp['ac_image'] = "test.png";
 			$tmp['ac_order'] = -1;
 			$tmp['open'] = $open;
-			$this->nodes[] = new AchMenuNode($tmp);
+			$this->nodes[] = new AchMenuNode($tmp,$this);
 
 			$res = $DBc->sqlQuery("SELECT * FROM ach_category LEFT JOIN (ach_category_lang) ON (acl_lang='".$_USER->getLang()."' AND acl_category=ac_id) WHERE ac_parent IS NULL ORDER by ac_order ASC, acl_name ASC");
 
@@ -45,8 +45,8 @@
 			return 0;
 		}
 
-		protected function makeChild(&$a) {
-			return new AchMenuNode($a);
+		protected function makeChild($a) {
+			return new AchMenuNode($a,$this);
 		}
 	}
 ?>
\ No newline at end of file
diff --git a/code/web/app/app_achievements/class/AchObjective_class.php b/code/web/app/app_achievements/class/AchObjective_class.php
index 47c946381..4101fe727 100644
--- a/code/web/app/app_achievements/class/AchObjective_class.php
+++ b/code/web/app/app_achievements/class/AchObjective_class.php
@@ -1,19 +1,21 @@
 <?php
 	class AchObjective extends Parentum {
-		private $id;
-		private $perk;
-		private $condition;
-		private $value;
-		private $name;
-		private $display;
-		private $done;
-		private $progress;
-		private $meta_image;
+		use Node;
 
-		function AchObjective(&$data) {
+		protected $perk;
+		protected $condition;
+		protected $value;
+		protected $name;
+		protected $display;
+		protected $done;
+		protected $progress;
+		protected $meta_image;
+
+		function AchObjective($data,$parent) {
 			global $DBc,$_USER;
-
-			$this->id = $data['ao_id'];
+			
+			$this->setParent($parent);
+			$this->setID($data['ao_id']);
 			$this->perk = $data['ao_perk'];
 			$this->condition = $data['ao_condition'];
 			$this->value = $data['ao_value'];
@@ -30,7 +32,7 @@
 			}
 		}
 
-		protected function makeChild(&$a) {
+		protected function makeChild($a) {
 			return null;
 		}
 
@@ -38,10 +40,6 @@
 			return $this->meta_image;
 		}
 
-		function getID() {
-			return $this->id;
-		}
-
 		function getPerk() {
 			return $this->perk;
 		}
diff --git a/code/web/app/app_achievements/class/AchPerk_class.php b/code/web/app/app_achievements/class/AchPerk_class.php
index 15c9547ec..a8c0713d2 100644
--- a/code/web/app/app_achievements/class/AchPerk_class.php
+++ b/code/web/app/app_achievements/class/AchPerk_class.php
@@ -1,18 +1,18 @@
 <?php
-	class AchPerk extends RenderNodeIterator {
-		private $id;
-		private $parent;
-		private $achievement;
-		private $value;
-		private $name;
-		private $done;
-		private $dev;
+	class AchPerk extends Parentum {
+		use Node;
 
-		function AchPerk(&$data) {
+		protected $achievement;
+		protected $value;
+		protected $name;
+		protected $done;
+		protected $dev;
+
+		function AchPerk($data,$parent) {
 			global $DBc,$_USER;
-
-			$this->id = $data['ap_id'];
-			$this->parent = $data['this'];
+			
+			$this->setParent($parent);
+			$this->setID($data['ap_id']);
 			$this->achievement = $data['ap_achievement'];
 			$this->value = $data['ap_value'];
 			$this->name = $data['apl_name'];
@@ -22,20 +22,12 @@
 			$res = $DBc->sqlQuery("SELECT * FROM ach_objective LEFT JOIN (ach_objective_lang) ON (aol_lang='".$_USER->getLang()."' AND aol_objective=ao_id) LEFT JOIN (ach_player_objective) ON (apo_objective=ao_id AND apo_player='".$_USER->getID()."') LEFT JOIN (ach_achievement) ON (aa_id=ao_metalink) WHERE ao_perk='".$this->id."'");
 			$sz = sizeof($res);
 			for($i=0;$i<$sz;$i++) {
-				$this->nodes[] = $this->makeChild($res[$i]);
+				$this->addChild($this->makeChild($res[$i]));
 			}
 		}
 
-		protected function makeChild(&$a) {
-			return new AchObjective($a);
-		}
-
-		function getID() {
-			return $this->id;
-		}
-
-		function getParent() {
-			return $this->parent;
+		protected function makeChild($a) {
+			return new AchObjective($a,$this);
 		}
 
 		function getAchievement() {
@@ -51,11 +43,14 @@
 		}
 
 		function objDrawable() {
-			foreach($this->nodes as $elem) {
-				if($elem->getDisplay() != "hidden") {
+			$iter = $this->getIterator();
+			while($iter->hasNext()) {
+				$curr = $iter->getNext();
+				if($curr->getDisplay() != "hidden") {
 					return true;
 				}
 			}
+
 			return false;
 		}
 
diff --git a/code/web/app/app_achievements/class/AchSummary_class.php b/code/web/app/app_achievements/class/AchSummary_class.php
index db1d51978..fbd1642a6 100644
--- a/code/web/app/app_achievements/class/AchSummary_class.php
+++ b/code/web/app/app_achievements/class/AchSummary_class.php
@@ -15,15 +15,12 @@
 
 			$sz = sizeof($res);
 			for($i=0;$i<$sz;$i++) {
-				$tmp = $this->makeChild($res[$i]);
-
-				$this->child_done[] = sizeof($this->nodes);
-				$this->nodes[] = $tmp;
+				$this->addDone($this->makeChild($res[$i]));
 			}
 		}
 
-		protected function makeChild(&$a) {
-			return new AchAchievement($a);
+		protected function makeChild($a) {
+			return new AchAchievement($a,$this);
 		}
 
 		function getSummary() {
@@ -32,13 +29,15 @@
 				//and also sum up how many have been completed
 				$this->stats = array(); // [][name,done,total]
 
-				$tmp = $this->menu->getChildren();
-				foreach($tmp as $elem) {
-					if($elem->getID() == 0 || $elem->inDev()) {
+				$iter = $this->menu->getIterator();
+				while($iter->hasNext()) {
+					$curr = $iter->getNext();
+
+					if($curr->getID() == 0 || $curr->inDev()) {
 						continue; // skip summary page
 					}
-					$res = $this->sumStats($elem);
-					$this->stats[] = array($elem->getName(),$res[0],$res[1]);
+					$res = $this->sumStats($curr);
+					$this->stats[] = array($curr->getName(),$res[0],$res[1]);
 				}
 			}
 
@@ -59,8 +58,10 @@
 			$res = $DBc->sqlQuery("SELECT count(ap_id) as anz FROM ach_perk,ach_achievement WHERE aa_category='".$node->getID()."' AND ap_achievement=aa_id AND aa_dev='0' AND ap_dev='0'");
 			$total += $res[0]["anz"];
 			
-			$tmp = $node->getChildren();
-			foreach($tmp as $elem) {
+			$iter = $node->getIterator();
+			while($iter->hasNext()) {
+				$curr = $iter->getNext();
+
 				$res = $this->sumStats($elem);
 				$done += $res[0];
 				$total += $res[1];
diff --git a/code/web/app/app_achievements/class/NodeIterator_class.php b/code/web/app/app_achievements/class/NodeIterator_class.php
new file mode 100644
index 000000000..3bd4fd4b9
--- /dev/null
+++ b/code/web/app/app_achievements/class/NodeIterator_class.php
@@ -0,0 +1,25 @@
+<?php
+	class NodeIterator {
+		private $nodes;
+		private $curr;
+
+		function NodeIterator(&$nodes) {
+			$this->nodes = $nodes;
+			$this->curr = 0;
+		}
+
+		function hasNext() {
+			$tmp = array_keys($this->nodes);
+			return isset($this->nodes[$tmp[$this->curr]]);
+		}
+
+		function getNext() {
+			$tmp = array_keys($this->nodes);
+			return $this->nodes[$tmp[$this->curr++]];
+		}
+
+		function first() {
+			$this->curr = 0;
+		}
+	}
+?>
\ No newline at end of file
diff --git a/code/web/app/app_achievements/class/Node_trait.php b/code/web/app/app_achievements/class/Node_trait.php
new file mode 100644
index 000000000..527f6caa7
--- /dev/null
+++ b/code/web/app/app_achievements/class/Node_trait.php
@@ -0,0 +1,22 @@
+<?php
+	trait Node {
+		protected $id;
+		protected $parent;
+
+		final function getID() {
+			return $this->id;
+		}
+
+		final function getParent() {
+			return $this->parent;
+		}
+
+		final protected function setID($id) {
+			$this->id = $id;
+		}
+
+		final protected function setParent($p) {
+			$this->parent = $p;
+		}
+	}
+?>
\ No newline at end of file
diff --git a/code/web/app/app_achievements/class/Parentum_abstract.php b/code/web/app/app_achievements/class/Parentum_abstract.php
index 25b476535..0d725b9c4 100644
--- a/code/web/app/app_achievements/class/Parentum_abstract.php
+++ b/code/web/app/app_achievements/class/Parentum_abstract.php
@@ -1,5 +1,68 @@
 <?php
 	abstract class Parentum {
-		abstract protected function makeChild(&$args);
+		/*---------------------------
+			This class allows external access to the child-node list.
+			Use the NodeIterator to iterate through the list since
+			the numeric array keys might have gaps due to node removals!
+		---------------------------*/
+		protected $nodes = array();
+
+		abstract protected function makeChild($args); // overwriteable child generator; allows to define child type (eg.: admin classes that inherit base class)
+
+		final function getSize() {
+			return sizeof($this->nodes);
+		}
+
+		final function isEmpty() {
+			return (sizeof($this->nodes) == 0);
+		}
+
+		final function getIterator() {
+			return new NodeIterator($this->nodes);
+		}
+
+		final function addChild($n) {
+			$tmp = sizeof($this->nodes);
+			$this->nodes[] = $n;
+			return $tmp;
+		}
+
+		function removeChild($id) {
+			$this->removeIdx($this->getIdx($id));
+		}
+
+		function removeNode($n) {
+			$this->removeIdx($this->findNode($n));
+		}
+
+		final protected function removeIdx($idx) {
+			if($idx != null) {
+				unset($this->nodes[$idx]);
+			}
+		}
+
+		final protected function findNode($n) {
+			foreach($this->nodes as $key=>$elem) {
+				if($this->nodes[$key] === $n) {
+					return $key;
+				}
+			}
+
+			return null;
+		}
+
+		final protected function findNodeIdx($idx) {
+			return $this->nodes[$idx];
+		}
+
+		final protected function getIdx($id) {
+			foreach($this->nodes as $key=>$elem) {
+				if($elem->getID() == $id) {
+					return $key;
+				}
+			}
+
+			return null;
+		}
 	}
 ?>
\ No newline at end of file
diff --git a/code/web/app/app_achievements/class/RenderNodeIteraor_abstract.php b/code/web/app/app_achievements/class/RenderNodeIteraor_abstract.php
deleted file mode 100644
index 5fad955b8..000000000
--- a/code/web/app/app_achievements/class/RenderNodeIteraor_abstract.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-	abstract class RenderNodeIterator extends Parentum {
-		protected $nodes = array();
-
-		function getSize() {
-			return sizeof($this->nodes);
-		}
-
-		function getChild($i) {
-			return $this->nodes[$i];
-		}
-
-		function isEmpty() {
-			return (sizeof($this->nodes) == 0);
-		}
-
-		function getChildren() {
-			return $this->nodes;
-		}
-	}
-?>
\ No newline at end of file
diff --git a/code/web/app/app_achievements/include/ach_render_ig.php b/code/web/app/app_achievements/include/ach_render_ig.php
index 8de237a6d..4b67407c1 100644
--- a/code/web/app/app_achievements/include/ach_render_ig.php
+++ b/code/web/app/app_achievements/include/ach_render_ig.php
@@ -132,9 +132,13 @@
 		if($sub == 0) {
 			$html = "<table cellpadding='2px'>";
 		}
-		$sz = $menu->getSize();
-		for($i=0;$i<$sz;$i++) {
-			$curr = $menu->getChild($i);
+
+		$iter = $menu->getIterator();
+		while($iter->hasNext()) {
+			$curr = $iter->getNext();
+		#$sz = $menu->getSize();
+		#for($i=0;$i<$sz;$i++) {
+			#$curr = $menu->getChild($i);
 			if($curr->inDev()) {
 				continue;
 			}
@@ -176,24 +180,28 @@
 			$html .= ach_render_tiebar($cat->getCurrentCult(),$cat->getCurrentCiv(),$cat);
 		}
 
-		$tmp = $cat->getDone();
-		$sz = sizeof($tmp);
-		for($i=0;$i<$sz;$i++) {
+		$iter = $cat->getDone();
+		while($iter->hasNext()) {
+			$curr = $cat->findNodeIdx($iter->getNext());
+		#$sz = sizeof($tmp);
+		#for($i=0;$i<$sz;$i++) {
 			#echo "A";
-			if($cat->getChild($tmp[$i])->inDev()) {
+			if($curr->inDev()) {
 				continue;
 			}
-			$html .= ach_render_achievement_done($cat->getChild($tmp[$i]));
+			$html .= ach_render_achievement_done($curr);
 		}
 
-		$tmp = $cat->getOpen();
-		$sz = sizeof($tmp);
-		for($i=0;$i<$sz;$i++) {
+		$iter = $cat->getOpen();
+		while($iter->hasNext()) {
+			$curr = $cat->findNodeIdx($iter->getNext());
+		#$sz = sizeof($tmp);
+		#for($i=0;$i<$sz;$i++) {
 			#echo "B";
-			if($cat->getChild($tmp[$i])->inDev()) {
+			if($curr->inDev()) {
 				continue;
 			}
-			$html .= ach_render_achievement_open($cat->getChild($tmp[$i]));
+			$html .= ach_render_achievement_open($curr));
 		}
 
 		return $html;
@@ -251,8 +259,7 @@
 		$html = "";
 
 		$perk_list = $ach->getOpen();
-
-		$perk = $ach->getChild($perk_list[0]);
+		$perk = $ach->findNodeIdx($perk_list->getNext());
 
 		if($perk->inDev()) {
 			return $html;
@@ -273,9 +280,11 @@
 		$html = "";
 
 		$perk_list = $ach->getDone();
+		while($perk_list->hasNext()) {
+			$perk = $this->findNodeIdx($perk_list->getNext());
 
-		foreach($perk_list as $elem) {
-			$perk = $ach->getChild($elem);
+		#foreach($perk_list as $elem) {
+			#$perk = $ach->getChild($elem);
 			if($perk->inDev()) {
 				continue;
 			}
@@ -291,7 +300,9 @@
 		$i = 0;
 		$skip = false;
 
-		foreach($obj as $elem) {
+		while($obj->hasNext()) {
+		#foreach($obj as $elem) {
+			$elem = $obj->getNext();
 			if(($i%2) == 0) {
 				$html .= "<tr>";
 			}
diff --git a/code/web/app/app_achievements/include/ach_render_web.php b/code/web/app/app_achievements/include/ach_render_web.php
index 6ae549a09..a12713180 100644
--- a/code/web/app/app_achievements/include/ach_render_web.php
+++ b/code/web/app/app_achievements/include/ach_render_web.php
@@ -134,8 +134,6 @@
 	}
 
 	function ach_render_menu(&$menu,$sub = 0) {
-		global $_CONF;
-
 		$html = "<style>
 				.ach_menu {
 					display:block;
@@ -153,9 +151,18 @@
 				}
 				</style>";
 
-		$sz = $menu->getSize();
-		for($i=0;$i<$sz;$i++) {
-			$curr = $menu->getChild($i);
+		return $html.ach_render_mnode($menu,$sub);
+	}
+
+	function ach_render_mnode(&$menu,$sub) {
+		global $_CONF;
+		
+		$iter = $menu->getIterator();
+		while($iter->hasNext()) {
+			$curr = $iter->getNext();
+		#$sz = $menu->getSize();
+		#for($i=0;$i<$sz;$i++) {
+		#	$curr = $menu->getChild($i);
 			if($curr->inDev()) {
 				continue;
 			}
@@ -172,7 +179,7 @@
 				</tr>
 			</table></a></span>";
 			if($curr->hasOpenCat() != 0) {
-				$html .= "<div style='display:block;margin-left:25px;'>".ach_render_menu($curr,($sub+4))."</div>";
+				$html .= "<div style='display:block;margin-left:25px;'>".ach_render_mnode($curr,($sub+4))."</div>";
 			}
 		}
 
@@ -186,24 +193,28 @@
 			$html .= ach_render_tiebar($cat->getCurrentCult(),$cat->getCurrentCiv(),$cat);
 		}
 
-		$tmp = $cat->getDone();
-		$sz = sizeof($tmp);
-		for($i=0;$i<$sz;$i++) {
+		$iter = $cat->getDone();
+		while($iter->hasNext()) {
+			$curr = $cat->findNodeIdx($iter->getNext());
+		#$sz = sizeof($tmp);
+		#for($i=0;$i<$sz;$i++) {
 			#echo "A";
-			if($cat->getChild($tmp[$i])->inDev()) {
+			if($curr->inDev()) {
 				continue;
 			}
-			$html .= ach_render_achievement_done($cat->getChild($tmp[$i]));
+			$html .= ach_render_achievement_done($curr);
 		}
 
-		$tmp = $cat->getOpen();
-		$sz = sizeof($tmp);
-		for($i=0;$i<$sz;$i++) {
+		$iter = $cat->getOpen();
+		while($iter->hasNext()) {
+			$curr = $cat->findNodeIdx($iter->getNext());
+		#$sz = sizeof($tmp);
+		#for($i=0;$i<$sz;$i++) {
 			#echo "B";
-			if($cat->getChild($tmp[$i])->inDev()) {
+			if($curr->inDev()) {
 				continue;
 			}
-			$html .= ach_render_achievement_open($cat->getChild($tmp[$i]));
+			$html .= ach_render_achievement_open($curr));
 		}
 
 		return $html;
@@ -284,8 +295,9 @@
 		$html = "";
 
 		$perk_list = $ach->getOpen();
+		$perk = $ach->findNodeIdx($perk_list->getNext());
 
-		$perk = $ach->getChild($perk_list[0]);
+		#$perk = $ach->getChild($perk_list[0]);
 
 		if($perk->inDev()) {
 			return $html;
@@ -295,7 +307,7 @@
 			$html .= "<span style='color:#999999;font-weight:bold;display:block;'>".$perk->getName()."</span>";
 		}
 		if($perk->objDrawable()) {
-			$html .= ach_render_obj_list($perk->getChildren());
+			$html .= ach_render_obj_list($perk->getIterator());
 		}
 
 		return $html;
@@ -306,9 +318,10 @@
 		$html = "";
 
 		$perk_list = $ach->getDone();
-
-		foreach($perk_list as $elem) {
-			$perk = $ach->getChild($elem);
+		while($perk_list->hasNext()) {
+			$perk = $this->findNodeIdx($perk_list->getNext());
+		#foreach($perk_list as $elem) {
+			#$perk = $ach->getChild($elem);
 			if($perk->inDev()) {
 				continue;
 			}
@@ -323,8 +336,10 @@
 
 		$i = 0;
 		$skip = false;
-
-		foreach($obj as $elem) {
+		
+		while($obj->hasNext()) {
+		#foreach($obj as $elem) {
+			$elem = $obj->getNext();
 			if(($i%2) == 0) {
 				$html .= "<tr>";
 			}
diff --git a/code/web/app/app_achievements/index.php b/code/web/app/app_achievements/index.php
index a315f70d9..7dd206c89 100644
--- a/code/web/app/app_achievements/index.php
+++ b/code/web/app/app_achievements/index.php
@@ -34,10 +34,10 @@ else {
 require_once("include/ach_render_common.php");
 
 require_once("class/Parentum_abstract.php");
-require_once("class/RenderNodeIteraor_abstract.php");
 require_once("class/AchList_abstract.php");
 require_once("class/Tieable_inter.php");
-
+require_once("class/NodeIterator_class.php");
+require_once("class/Node_trait.php");
 
 require_once("class/AchMenu_class.php");
 require_once("class/AchMenuNode_class.php");