diff --git a/jslib/src/core/math.kt b/jslib/src/core/math.kt
index b3ad3e1c167..3566b782aa6 100644
--- a/jslib/src/core/math.kt
+++ b/jslib/src/core/math.kt
@@ -15,6 +15,8 @@ class MathClass() {
     fun sin(value : Double) = 0.0
     fun exp(value : Double) = 0.0
     fun max(vararg values : Double) = 0.0
+    fun max(vararg values : Int) : Int = js.noImpl
+    fun min(vararg values : Int) : Int = js.noImpl
     fun min(vararg values : Double) = 0.0
     fun sqrt(value : Double) = 0.0
     fun tan(value : Double) = 0.0
diff --git a/jslib/src/jquery/common.kt b/jslib/src/jquery/common.kt
index 856bf3e49fe..54ad3feb9dd 100644
--- a/jslib/src/jquery/common.kt
+++ b/jslib/src/jquery/common.kt
@@ -5,8 +5,8 @@ import js.DomElement
 
 native
 class JQuery() {
-    fun addClass(className : String) : JQuery = this;
-    fun addClass(f : DomElement.(Int, String)->String) = this;
+    fun addClass(className : String) : JQuery = js.noImpl;
+    fun addClass(f : DomElement.(Int, String)->String) = js.noImpl;
 
     fun attr(attrName : String) = "";
     fun attr(attrName : String, value : String) = this;
@@ -39,6 +39,8 @@ class JQuery() {
     fun slideUp() = this;
     fun hover(handlerInOut : DomElement.() -> Unit) = this;
     fun hover(handlerIn : DomElement.() -> Unit, handlerOut : DomElement.() -> Unit) = this;
+    fun next() : JQuery = js.noImpl
+    fun parent() : JQuery = js.noImpl
 }
 
 native
diff --git a/jslib/src/jquery/ui.kt b/jslib/src/jquery/ui.kt
new file mode 100644
index 00000000000..e9ca87be43a
--- /dev/null
+++ b/jslib/src/jquery/ui.kt
@@ -0,0 +1,15 @@
+package jquery.ui
+
+
+//jquery UI
+import jquery.JQuery
+import js.native
+
+native
+fun JQuery.buttonset()  : JQuery = js.noImpl;
+native
+fun JQuery.dialog() : JQuery = js.noImpl;
+native
+fun JQuery.button() : JQuery = js.noImpl;
+native
+fun JQuery.accordion() : JQuery = js.noImpl
diff --git a/jslib/src/pixastic/pixastic.kt b/jslib/src/pixastic/pixastic.kt
new file mode 100644
index 00000000000..b5b4d6d8a19
--- /dev/null
+++ b/jslib/src/pixastic/pixastic.kt
@@ -0,0 +1,16 @@
+package jquery.pixastic
+
+import jquery.JQuery
+import js.native
+
+native
+fun JQuery.pixastic(actionName : String) = js.noImpl
+
+
+native
+object Pixastic {
+}
+
+native
+fun addAction(actionName : String,
+        process : (oldData :  Array<Int>, newData :  Array<Int>, width :  Int, height :  Int)->Unit) = js.noImpl
\ No newline at end of file
diff --git a/translator/src/org/jetbrains/k2js/config/Config.java b/translator/src/org/jetbrains/k2js/config/Config.java
index ecee2a73aca..00cd8a790e9 100644
--- a/translator/src/org/jetbrains/k2js/config/Config.java
+++ b/translator/src/org/jetbrains/k2js/config/Config.java
@@ -28,6 +28,7 @@ public abstract class Config {
     private static final List<String> LIB_FILE_NAMES = Arrays.asList(
             "/core/annotations.kt",
             "/jquery/common.kt",
+            "/jquery/ui.kt",
             "/core/javautil.kt",
             "/core/javalang.kt",
             "/core/core.kt",
@@ -37,7 +38,8 @@ public abstract class Config {
             "/html5/canvas.kt",
             "/html5/files.kt",
             "/html5/image.kt",
-            "/helper/ip.kt"
+            "/helper/ip.kt",
+            "/pixastic/pixastic.kt"
     );
 
 
diff --git a/translator/src/org/jetbrains/k2js/translate/declaration/ClassDeclarationTranslator.java b/translator/src/org/jetbrains/k2js/translate/declaration/ClassDeclarationTranslator.java
index eff36cabf93..48ef6267a3b 100644
--- a/translator/src/org/jetbrains/k2js/translate/declaration/ClassDeclarationTranslator.java
+++ b/translator/src/org/jetbrains/k2js/translate/declaration/ClassDeclarationTranslator.java
@@ -6,7 +6,6 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lang.descriptors.ClassDescriptor;
 import org.jetbrains.jet.lang.psi.JetClass;
-import org.jetbrains.jet.lang.psi.JetDeclaration;
 import org.jetbrains.k2js.translate.context.Namer;
 import org.jetbrains.k2js.translate.context.TranslationContext;
 import org.jetbrains.k2js.translate.general.AbstractTranslator;
@@ -27,7 +26,7 @@ import java.util.Map;
 public final class ClassDeclarationTranslator extends AbstractTranslator {
 
     @NotNull
-    private final List<JetDeclaration> namespaceDeclarations;
+    private final List<ClassDescriptor> descriptors;
     @NotNull
     private final Map<JsName, JsName> localToGlobalClassName;
     @NotNull
@@ -37,9 +36,10 @@ public final class ClassDeclarationTranslator extends AbstractTranslator {
     @Nullable
     private JsStatement declarationsStatement = null;
 
-    public ClassDeclarationTranslator(@NotNull TranslationContext context, @NotNull List<JetDeclaration> declarationList) {
+    public ClassDeclarationTranslator(@NotNull TranslationContext context,
+                                      @NotNull List<ClassDescriptor> descriptors) {
         super(context);
-        this.namespaceDeclarations = declarationList;
+        this.descriptors = descriptors;
         this.localToGlobalClassName = new HashMap<JsName, JsName>();
         this.dummyFunctionScope = new JsScope(context().jsScope(), "class declaration function");
     }
@@ -106,10 +106,8 @@ public final class ClassDeclarationTranslator extends AbstractTranslator {
     @NotNull
     private List<JetClass> getClassDeclarations() {
         List<JetClass> classes = new ArrayList<JetClass>();
-        for (JetDeclaration declaration : namespaceDeclarations) {
-            if (declaration instanceof JetClass) {
-                classes.add((JetClass) declaration);
-            }
+        for (ClassDescriptor classDescriptor : descriptors) {
+            classes.add(BindingUtils.getClassForDescriptor(context().bindingContext(), classDescriptor));
         }
         return ClassSorter.sortUsingInheritanceOrder(classes, context().bindingContext());
     }
@@ -125,7 +123,7 @@ public final class ClassDeclarationTranslator extends AbstractTranslator {
     @NotNull
     private JsName generateLocalAlias(@NotNull JetClass declaration) {
         JsName globalClassName = context().getNameForElement(declaration);
-        JsName localAlias = dummyFunctionScope.declareName(globalClassName.getIdent());
+        JsName localAlias = dummyFunctionScope.declareTemporary();
         localToGlobalClassName.put(localAlias, globalClassName);
         ClassDescriptor descriptor = BindingUtils.getClassDescriptor(context().bindingContext(), declaration);
         context().aliaser().setAliasForDescriptor(descriptor, localAlias);
diff --git a/translator/src/org/jetbrains/k2js/translate/declaration/NamespaceTranslator.java b/translator/src/org/jetbrains/k2js/translate/declaration/NamespaceTranslator.java
index f1133ea17b7..9ae582da959 100644
--- a/translator/src/org/jetbrains/k2js/translate/declaration/NamespaceTranslator.java
+++ b/translator/src/org/jetbrains/k2js/translate/declaration/NamespaceTranslator.java
@@ -4,7 +4,6 @@ import com.google.dart.compiler.backend.js.ast.*;
 import com.google.dart.compiler.util.AstUtil;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.lang.descriptors.NamespaceDescriptor;
-import org.jetbrains.jet.lang.psi.JetDeclaration;
 import org.jetbrains.k2js.translate.context.Namer;
 import org.jetbrains.k2js.translate.context.TranslationContext;
 import org.jetbrains.k2js.translate.general.AbstractTranslator;
@@ -13,12 +12,12 @@ import org.jetbrains.k2js.translate.general.Translation;
 import java.util.ArrayList;
 import java.util.List;
 
-import static org.jetbrains.k2js.translate.utils.BindingUtils.getDeclarationsForNamespace;
+import static org.jetbrains.k2js.translate.utils.DescriptorUtils.getAllClassesDefinedInNamespace;
 
 /**
  * @author Pavel.Talanov
  *         <p/>
- *         Translates single namespace.
+ *         Genereate code for a single namespace.
  */
 public final class NamespaceTranslator extends AbstractTranslator {
 
@@ -38,8 +37,8 @@ public final class NamespaceTranslator extends AbstractTranslator {
         super(context.newDeclaration(namespace));
         this.namespace = namespace;
         this.namespaceName = context.getNameForDescriptor(namespace);
-        List<JetDeclaration> namespaceDeclarations = getDeclarationsForNamespace(context.bindingContext(), namespace);
-        this.classDeclarationTranslator = new ClassDeclarationTranslator(context(), namespaceDeclarations);
+        this.classDeclarationTranslator = new ClassDeclarationTranslator(context(),
+                getAllClassesDefinedInNamespace(namespace));
     }
 
     @NotNull
diff --git a/translator/src/org/jetbrains/k2js/translate/reference/CallTranslator.java b/translator/src/org/jetbrains/k2js/translate/reference/CallTranslator.java
index df28e271329..90f24426281 100644
--- a/translator/src/org/jetbrains/k2js/translate/reference/CallTranslator.java
+++ b/translator/src/org/jetbrains/k2js/translate/reference/CallTranslator.java
@@ -14,6 +14,7 @@ import org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverDescriptor;
 import org.jetbrains.k2js.translate.context.TranslationContext;
 import org.jetbrains.k2js.translate.general.AbstractTranslator;
 import org.jetbrains.k2js.translate.intrinsic.FunctionIntrinsic;
+import org.jetbrains.k2js.translate.utils.AnnotationsUtils;
 import org.jetbrains.k2js.translate.utils.TranslationUtils;
 
 import java.util.ArrayList;
@@ -77,12 +78,16 @@ public final class CallTranslator extends AbstractTranslator {
 
     @NotNull
         /*package*/ JsExpression translate() {
+        //NOTE: treat native extension function calls as usual calls
         if (isIntrinsic()) {
             return intrinsicInvocation();
         }
         if (isConstructor()) {
             return constructorCall();
         }
+        if (isNative()) {
+            return methodCall();
+        }
         if (isExtensionFunctionLiteral()) {
             return extensionFunctionLiteralCall();
         }
@@ -92,7 +97,6 @@ public final class CallTranslator extends AbstractTranslator {
         return methodCall();
     }
 
-
     private boolean isIntrinsic() {
         return context().intrinsics().isIntrinsic(descriptor);
     }
@@ -123,6 +127,10 @@ public final class CallTranslator extends AbstractTranslator {
         return ReferenceTranslator.translateAsFQReference(descriptor, context());
     }
 
+    private boolean isNative() {
+        return AnnotationsUtils.isNativeObject(descriptor);
+    }
+
     private boolean isExtensionFunctionLiteral() {
         boolean isLiteral = descriptor instanceof VariableAsFunctionDescriptor
                 || descriptor instanceof ExpressionAsFunctionDescriptor;
diff --git a/translator/src/org/jetbrains/k2js/translate/utils/BindingUtils.java b/translator/src/org/jetbrains/k2js/translate/utils/BindingUtils.java
index 96eac0c255f..21e57fa974c 100644
--- a/translator/src/org/jetbrains/k2js/translate/utils/BindingUtils.java
+++ b/translator/src/org/jetbrains/k2js/translate/utils/BindingUtils.java
@@ -59,6 +59,7 @@ public final class BindingUtils {
         return getDescriptorForExpression(context, declaration, FunctionDescriptor.class);
     }
 
+    //TODO:
     @NotNull
     public static PropertyAccessorDescriptor getPropertyAccessorDescriptor(@NotNull BindingContext context,
                                                                            @NotNull JetPropertyAccessor declaration) {
diff --git a/translator/src/org/jetbrains/k2js/translate/utils/ClassSorter.java b/translator/src/org/jetbrains/k2js/translate/utils/ClassSorter.java
index 9bd80bf97c0..11f51db1b62 100644
--- a/translator/src/org/jetbrains/k2js/translate/utils/ClassSorter.java
+++ b/translator/src/org/jetbrains/k2js/translate/utils/ClassSorter.java
@@ -14,6 +14,7 @@ import static org.jetbrains.k2js.translate.utils.DescriptorUtils.getSuperclassDe
 
 
 //TODO: can optimise using less dumb implementation
+//TODO: pass list of descriptors here, not the list of jet classes
 
 /**
  * @author Pavel Talanov
diff --git a/translator/src/org/jetbrains/k2js/translate/utils/DescriptorUtils.java b/translator/src/org/jetbrains/k2js/translate/utils/DescriptorUtils.java
index a055c6a38c1..2e2d2184cd8 100644
--- a/translator/src/org/jetbrains/k2js/translate/utils/DescriptorUtils.java
+++ b/translator/src/org/jetbrains/k2js/translate/utils/DescriptorUtils.java
@@ -1,5 +1,6 @@
 package org.jetbrains.k2js.translate.utils;
 
+import com.google.common.collect.Lists;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lang.descriptors.*;
@@ -187,4 +188,16 @@ public final class DescriptorUtils {
         return null;
     }
 
+    @NotNull
+    public static List<ClassDescriptor> getAllClassesDefinedInNamespace(@NotNull NamespaceDescriptor namespaceDescriptor) {
+        List<ClassDescriptor> classDescriptors = Lists.newArrayList();
+        for (DeclarationDescriptor descriptor : namespaceDescriptor.getMemberScope().getAllDescriptors()) {
+            if (descriptor instanceof ClassDescriptor) {
+                classDescriptors.add((ClassDescriptor) descriptor);
+            }
+        }
+        return classDescriptors;
+    }
+
+
 }
diff --git a/translator/testFiles/multiNamespace/cases/classesInheritedFromOtherNamespace/a.kt b/translator/testFiles/multiNamespace/cases/classesInheritedFromOtherNamespace/a.kt
new file mode 100644
index 00000000000..d75b0fc650c
--- /dev/null
+++ b/translator/testFiles/multiNamespace/cases/classesInheritedFromOtherNamespace/a.kt
@@ -0,0 +1,13 @@
+package foo
+
+import bar.*
+
+open class A() {
+    open fun f() = 3;
+}
+
+open class C() : B() {
+    override fun f() = 5
+}
+
+fun box() = (A().f() == 3) && (B().f() == 4) && (C().f() == 5)
\ No newline at end of file
diff --git a/translator/testFiles/multiNamespace/cases/classesInheritedFromOtherNamespace/b.kt b/translator/testFiles/multiNamespace/cases/classesInheritedFromOtherNamespace/b.kt
new file mode 100644
index 00000000000..17df2512c83
--- /dev/null
+++ b/translator/testFiles/multiNamespace/cases/classesInheritedFromOtherNamespace/b.kt
@@ -0,0 +1,7 @@
+package bar
+
+import foo.A
+
+open class B() : A() {
+    override fun f() = 4
+}
\ No newline at end of file
diff --git a/translator/testFiles/multiNamespace/cases/functionsVisibleFromOtherNamespace/a.kt b/translator/testFiles/multiNamespace/cases/functionsVisibleFromOtherNamespace/a.kt
new file mode 100644
index 00000000000..bc9c42639ca
--- /dev/null
+++ b/translator/testFiles/multiNamespace/cases/functionsVisibleFromOtherNamespace/a.kt
@@ -0,0 +1,3 @@
+package bar
+
+fun f() = 3;
\ No newline at end of file
diff --git a/translator/testFiles/multiNamespace/cases/functionsVisibleFromOtherNamespace/b.kt b/translator/testFiles/multiNamespace/cases/functionsVisibleFromOtherNamespace/b.kt
new file mode 100644
index 00000000000..53743f9f3c7
--- /dev/null
+++ b/translator/testFiles/multiNamespace/cases/functionsVisibleFromOtherNamespace/b.kt
@@ -0,0 +1,5 @@
+package foo
+
+import bar.*
+
+fun box() = (f() == 3)
\ No newline at end of file
diff --git a/translatorTests/test/org/jetbrains/k2js/test/MultiNamespaceTest.java b/translatorTests/test/org/jetbrains/k2js/test/MultiNamespaceTest.java
new file mode 100644
index 00000000000..3b2ff745fce
--- /dev/null
+++ b/translatorTests/test/org/jetbrains/k2js/test/MultiNamespaceTest.java
@@ -0,0 +1,27 @@
+package org.jetbrains.k2js.test;
+
+/**
+ * @author Pavel Talanov
+ */
+public class MultiNamespaceTest extends TranslationTest {
+    final private static String MAIN = "multiNamespace/";
+
+    @Override
+    protected String mainDirectory() {
+        return MAIN;
+    }
+
+    public void testFunctionsVisibleFromOtherNamespace() throws Exception {
+        testFooBoxIsTrue("functionsVisibleFromOtherNamespace");
+    }
+
+    public void testClassesInheritedFromOtherNamespace() throws Exception {
+        testFooBoxIsTrue("classesInheritedFromOtherNamespace");
+    }
+
+    @Override
+    public void testFooBoxIsTrue(String dirName) throws Exception {
+        testMultiFile(dirName, "foo", "box", true);
+    }
+}
+