Index: cm1/index.php
===================================================================
---  cm1/index.php (revision 39725)
+++  cm1/index.php (working copy)
@@ -471,7 +471,13 @@ class tx_templavoila_cm1 extends t3lib_SCbase {
 					}
 				});
 			}
-		').$this->doc->getDynTabMenuJScode();
+		');
+
+		if(t3lib_div::int_from_ver(TYPO3_version) < 4005000) {
+			$this->doc->getDynTabMenuJScode();
+		} else {
+			$this->doc->loadJavascriptLib('js/tabmenu.js');
+		}
 
 			// Setting up the context sensitive menu:
 		$CMparts = $this->doc->getContextMenuCode();
Index: mod1/db_new_content_el.php
===================================================================
---  mod1/db_new_content_el.php (revision 39725)
+++  mod1/db_new_content_el.php (working copy)
@@ -144,7 +144,13 @@ class tx_templavoila_dbnewcontentel {
 			$this->doc->loadJavascriptLib('contrib/prototype/prototype.js');
 		}
 
-		$this->doc->JScodeLibArray['dyntabmenu'] = $this->doc->getDynTabMenuJScode();
+
+		if(t3lib_div::int_from_ver(TYPO3_version) < 4005000) {
+			$this->doc->JScodeLibArray['dyntabmenu'] = $this->doc->getDynTabMenuJScode();
+		} else {
+			$this->doc->loadJavascriptLib('js/tabmenu.js');
+		}
+
 		$this->doc->form='<form action="" name="editForm">';
 
 		$config = t3lib_BEfunc::getPagesTSconfig($this->id);
Index: mod1/index.php
===================================================================
---  mod1/index.php (revision 39725)
+++  mod1/index.php (working copy)
@@ -506,7 +506,12 @@ class tx_templavoila_module1 extends t3lib_SCbase {
 			}
 
 				// Set up JS for dynamic tab menu and side bar
-			$this->doc->JScode .= $this->doc->getDynTabMenuJScode();
+			if(t3lib_div::int_from_ver(TYPO3_version) < 4005000) {
+				$this->doc->JScode .= $this->doc->getDynTabMenuJScode();
+			} else {
+				$this->doc->loadJavascriptLib('js/tabmenu.js');
+			}
+
 			$this->doc->JScode .= $this->modTSconfig['properties']['sideBarEnable'] ? $this->sideBarObj->getJScode() : '';
 
 				// Setting up support for context menus (when clicking the items icon)
Index: mod2/index.php
===================================================================
---  mod2/index.php (revision 39725)
+++  mod2/index.php (working copy)
@@ -193,7 +193,15 @@ class tx_templavoila_module2 extends t3lib_SCbase {
 						}
 					}
 				}
-			').$this->doc->getDynTabMenuJScode();
+			');
+
+
+			if(t3lib_div::int_from_ver(TYPO3_version) < 4005000) {
+				$this->doc->getDynTabMenuJScode();
+			} else {
+				$this->doc->loadJavascriptLib('js/tabmenu.js');
+			}
+
 
 			$this->renderModuleContent();