diff --git a/modules/boonex/ads/classes/BxAdsFormEntry.php b/modules/boonex/ads/classes/BxAdsFormEntry.php
index 6fc7ad59c8..c441c3d784 100644
--- a/modules/boonex/ads/classes/BxAdsFormEntry.php
+++ b/modules/boonex/ads/classes/BxAdsFormEntry.php
@@ -84,8 +84,8 @@ public function __construct($aInfo, $oTemplate = false)
 
     function getCode($bDynamicMode = false)
     {
-        $this->_oModule->_oTemplate->addJs('entry.js');
-        return $this->_oModule->_oTemplate->getJsCode('entry') . parent::getCode($bDynamicMode);
+        $sInclude = $this->_oModule->_oTemplate->addJs(array('entry.js'), $bDynamicMode);
+        return ($bDynamicMode ? $sInclude : '') . $this->_oModule->_oTemplate->getJsCode('entry') . parent::getCode($bDynamicMode);
     }
 
     function initChecker ($aValues = array (), $aSpecificValues = array())
diff --git a/modules/boonex/ads/classes/BxAdsModule.php b/modules/boonex/ads/classes/BxAdsModule.php
index 7765e68149..c22d7a5a48 100644
--- a/modules/boonex/ads/classes/BxAdsModule.php
+++ b/modules/boonex/ads/classes/BxAdsModule.php
@@ -26,6 +26,18 @@ function __construct(&$aModule)
         ));
     }
 
+    public function actionGetCategoryForm()
+    {
+        if(bx_get('category') === false)
+            return echoJson(array());
+
+        return echoJson(array(
+            'content' => $this->serviceEntityCreate(array(
+                'dynamic_mode' => true
+            ))
+        ));
+    }
+
     public function actionInterested()
     {
         $CNF = &$this->_oConfig->CNF;
diff --git a/modules/boonex/ads/js/entry.js b/modules/boonex/ads/js/entry.js
index ff080bc4ae..5d1f29fede 100644
--- a/modules/boonex/ads/js/entry.js
+++ b/modules/boonex/ads/js/entry.js
@@ -39,9 +39,31 @@ BxAdsEntry.prototype.interested = function(oElement, iContentId) {
 };
 
 BxAdsEntry.prototype.onChangeCategory = function(oElement) {
+    var $this = this;
+
     this.loadingInBlock(oElement, true);
 
-    document.location = bx_append_url_params(document.location.href, {category: $(oElement).val()});
+    jQuery.get (
+        this._sActionsUrl + 'get_category_form',
+        {
+            category: $(oElement).val()
+        },
+        function(oData) {
+            if(oElement)
+                $this.loadingInBlock(oElement, false);
+
+            if(!oData || !oData.content && oData.content.length == 0) 
+                return;
+
+            var oContent = $(oData.content);
+            var sFormId = oContent.filter('form').attr('id');
+            if(!sFormId)
+                return;
+
+            $('#' + sFormId).replaceWith(oContent);
+        },
+        'json'
+    );
 };
 
 BxAdsEntry.prototype.loadingInButton = function(e, bShow) {