diff --git a/lang/en/home.php b/lang/en/home.php
index 57f9246..ddfccbb 100755
--- a/lang/en/home.php
+++ b/lang/en/home.php
@@ -129,4 +129,10 @@
 
     $g_lang["export_graph"]    = "Export to file";
     $g_lang["import_graph"]    = "Import from file";
+
+    $g_lang["has_hamiltonian_path"] = "Graph has Hamiltonian path";
+    $g_lang["has_not_hamiltonian_path"] = "Graph has not Hamiltonian path";
+
+    $g_lang["has_hamiltonian_loop"] = "Graph has Hamiltonian cycle";
+    $g_lang["has_not_hamiltonian_loop"] = "Graph has not Hamiltonian cycle";
 ?>
diff --git a/lang/ru/home.php b/lang/ru/home.php
index 14e4f5d..b062920 100755
--- a/lang/ru/home.php
+++ b/lang/ru/home.php
@@ -132,4 +132,10 @@
 
     $g_lang["export_graph"]    = "Экспортировать граф";
     $g_lang["import_graph"]    = "Импортировать граф";
+
+    $g_lang["has_hamiltonian_path"] = "Граф содержит Гамильтонову цепь";
+    $g_lang["has_not_hamiltonian_path"] = "Граф не содержит Гамильтонову цепь";
+
+    $g_lang["has_hamiltonian_loop"] = "Граф содержит Гамильтонов цикл";
+    $g_lang["has_not_hamiltonian_loop"] = "Граф не содержит Гамильтонов цикл";
 ?>
diff --git a/script/plugins/HamiltonianLoop.js b/script/plugins/HamiltonianLoop.js
new file mode 100644
index 0000000..469c769
--- /dev/null
+++ b/script/plugins/HamiltonianLoop.js
@@ -0,0 +1,92 @@
+/**
+ * Find Eulerian Loop.
+ *
+ */
+function FindHamiltonianLoop(graph, app)
+{
+    BaseAlgorithmEx.apply(this, arguments);
+    this.message = g_processing;
+    this.selectedObjects = [];
+}
+
+
+// inheritance.
+FindHamiltonianLoop.prototype = Object.create(BaseAlgorithmEx.prototype);
+
+
+FindHamiltonianLoop.prototype.getName = function(local)
+{
+    return local == "ru" ? "Найти Гамильтонов цикл" : "Find Hamiltonian cycle";
+}
+
+FindHamiltonianLoop.prototype.getId = function()
+{
+    return "OlegSh.FindHamiltonianLoop";
+}
+
+// @return message for user.
+FindHamiltonianLoop.prototype.getMessage = function(local)
+{
+    return this.message;
+}
+
+FindHamiltonianLoop.prototype.result = function(resultCallback)
+{
+    this.outResultCallback = function (result ) { resultCallback(result); };
+    self = this;
+    this.CalculateAlgorithm("hamloop=cgiInput&report=xml", function (pathObjects, properties, results)
+                                                                    {
+                                                                        self.resultCallback(pathObjects, properties, results);
+                                                                    });
+    
+    return true;
+}
+
+FindHamiltonianLoop.prototype.resultCallback = function(pathObjects, properties, results)
+{
+    result  = results.length > 0 && results[0].value > 0 && results[0].type == 1;
+    
+    var outputResult = {};
+    outputResult["version"] = 1;
+    
+    this.message = result > 0 ? g_hasHamiltonianLoop : g_hasNotHamiltonianLoop;
+    if (result > 0)
+    {
+        var nodesPath = this.GetNodesPath(results, 1, results.length - 1);
+        outputResult["paths"] = [];
+        outputResult["paths"].push(nodesPath);
+        this.selectedObjects = [];
+        
+        for (var i = 0; i < pathObjects.length; i++)
+        {
+            this.selectedObjects[pathObjects[i].id] = 1;
+        }
+        
+        this.message = this.message + ": ";
+        for (var i = 0; i < nodesPath.length; i++)
+        {
+            this.message = this.message + this.graph.FindVertex(nodesPath[i]).mainText + ((i < nodesPath.length - 1) ? "&rArr;" : "");
+        }
+    }
+    
+    this.outResultCallback(outputResult);
+}
+
+FindHamiltonianLoop.prototype.getObjectSelectedGroup = function(object)
+{
+    return (object.id in this.selectedObjects) ? this.selectedObjects[object.id] : 0;
+}
+
+FindHamiltonianLoop.prototype.getPriority = function()
+{
+    return -7.1;
+}
+
+// Factory for connected components.
+function CreateFindHamiltonianLoop(graph, app)
+{
+    return new FindHamiltonianLoop(graph, app)
+}
+
+// Gerister connected component.
+RegisterAlgorithm (CreateFindHamiltonianLoop);
diff --git a/script/plugins/HamiltonianPath.js b/script/plugins/HamiltonianPath.js
new file mode 100644
index 0000000..aaddec3
--- /dev/null
+++ b/script/plugins/HamiltonianPath.js
@@ -0,0 +1,92 @@
+/**
+ * Find Eulerian Loop.
+ *
+ */
+function FindHamiltonianPath(graph, app)
+{
+    BaseAlgorithmEx.apply(this, arguments);
+    this.message = g_processing;
+    this.selectedObjects = [];
+}
+
+
+// inheritance.
+FindHamiltonianPath.prototype = Object.create(BaseAlgorithmEx.prototype);
+
+
+FindHamiltonianPath.prototype.getName = function(local)
+{
+    return local == "ru" ? "Найти Гамильтонову цепь" : "Find Hamiltonian path";
+}
+
+FindHamiltonianPath.prototype.getId = function()
+{
+    return "OlegSh.FindHamiltonianPath";
+}
+
+// @return message for user.
+FindHamiltonianPath.prototype.getMessage = function(local)
+{
+    return this.message;
+}
+
+FindHamiltonianPath.prototype.result = function(resultCallback)
+{
+    this.outResultCallback = function (result ) { resultCallback(result); };
+    self = this;
+    this.CalculateAlgorithm("hampath=cgiInput&report=xml", function (pathObjects, properties, results)
+                                                                    {
+                                                                        self.resultCallback(pathObjects, properties, results);
+                                                                    });
+    
+    return true;
+}
+
+FindHamiltonianPath.prototype.resultCallback = function(pathObjects, properties, results)
+{
+    result  = results.length > 0 && results[0].value > 0 && results[0].type == 1;
+    
+    var outputResult = {};
+    outputResult["version"] = 1;
+    
+    this.message = result > 0 ? g_hasHamiltonianPath : g_hasNotHamiltonianPath;
+    if (result > 0)
+    {
+        var nodesPath = this.GetNodesPath(results, 1, results.length - 1);
+        outputResult["paths"] = [];
+        outputResult["paths"].push(nodesPath);
+        this.selectedObjects = [];
+        
+        for (var i = 0; i < pathObjects.length; i++)
+        {
+            this.selectedObjects[pathObjects[i].id] = 1;
+        }
+        
+        this.message = this.message + ": ";
+        for (var i = 0; i < nodesPath.length; i++)
+        {
+            this.message = this.message + this.graph.FindVertex(nodesPath[i]).mainText + ((i < nodesPath.length - 1) ? "&rArr;" : "");
+        }
+    }
+    
+    this.outResultCallback(outputResult);
+}
+
+FindHamiltonianPath.prototype.getObjectSelectedGroup = function(object)
+{
+    return (object.id in this.selectedObjects) ? this.selectedObjects[object.id] : 0;
+}
+
+FindHamiltonianPath.prototype.getPriority = function()
+{
+    return -7.1;
+}
+
+// Factory for connected components.
+function CreateFindHamiltonianPath(graph, app)
+{
+    return new FindHamiltonianPath(graph, app)
+}
+
+// Gerister connected component.
+RegisterAlgorithm (CreateFindHamiltonianPath);
diff --git a/script/texts.js b/script/texts.js
index a383d9c..a408355 100644
--- a/script/texts.js
+++ b/script/texts.js
@@ -86,6 +86,12 @@ var g_flowNotExists = "Flow from %1 to %2 does not exists";
 var g_sourceVertex = "Source";
 var g_sinkVertex   = "Sink";
 
+var g_hasHamiltonianLoop = "Graph has Hamiltonian Loop";
+var g_hasNotHamiltonianLoop  = "Graph has not Hamiltonian Loop";
+
+var g_hasHamiltonianPath = "Graph has Hamiltonian Path";
+var g_hasNotHamiltonianPath = "Graph has not Hamiltonian Path";
+
 function loadTexts()
 {
 	g_textsSelectAndMove  = document.getElementById("SelectAndMoveObject").innerHTML;
@@ -171,4 +177,10 @@ function loadTexts()
     
     g_sourceVertex = document.getElementById("sourceVertex").innerHTML;
     g_sinkVertex   = document.getElementById("sinkVertex").innerHTML;
+    
+    g_hasHamiltonianLoop    = document.getElementById("hasHamiltonianLoop").innerHTML;
+    g_hasNotHamiltonianLoop = document.getElementById("hasNotHamiltonianLoop").innerHTML;
+
+    g_hasHamiltonianPath    = document.getElementById("hasHamiltonianPath").innerHTML;
+    g_hasNotHamiltonianPath = document.getElementById("hasNotHamiltonianPath").innerHTML;
 }
diff --git a/tpl/home.php b/tpl/home.php
index f88eafe..1fd8766 100755
--- a/tpl/home.php
+++ b/tpl/home.php
@@ -10,7 +10,7 @@
 
         <script src="<?= Root('i/js/dev/jquery-ui.js')?>"></script>
 	<script src="<?= Root('i/js/dev/jquery.feedback_me.js')?>"></script>
-        <script src="<?= Root("script/example.js?v=7")?>" ></script>
+        <script src="<?= Root("script/example.js?v=8")?>" ></script>
     </head>
 <!--
 <div class="pull-right">
@@ -419,6 +419,12 @@
         
     <p id="sourceVertex" class="translation"><?= L('sourceVertex')?></p>
     <p id="sinkVertex" class="translation"><?= L('sinkVertex')?></p>
+        
+    <p id="hasNotHamiltonianLoop" class="translation"><?= L('has_not_hamiltonian_loop')?></p>
+    <p id="hasHamiltonianLoop" class="translation"><?= L('has_hamiltonian_loop')?></p>
+        
+    <p id="hasNotHamiltonianPath" class="translation"><?= L('has_not_hamiltonian_path')?></p>
+    <p id="hasHamiltonianPath" class="translation"><?= L('has_hamiltonian_path')?></p>
 </section>
 <!--
 <script>