Index: typo3/template.php
===================================================================
--- typo3/template.php	(revision 4718)
+++ typo3/template.php	(working copy)
@@ -213,11 +213,20 @@
 	var $sectionFlag=0;				// Internal: Indicates if a <div>-output section is open
 	var $divClass = '';				// (Default) Class for wrapping <DIV>-tag of page. Is set in class extensions.
 
+		// flags for JS-libraries
+	protected $addPrototype = false;
+	protected $addScriptaculous = false;
+	protected $scriptaculousModules = array (
+		'builder'  => false,
+		'effects'  => false,
+		'dragdrop' => false,
+		'controls' => false,
+		'slider'   => false
+	);
+	protected $addExtJS = false;
+	protected $extJSDebug = false;
+	
 
-
-
-
-
 	/**
 	 * Constructor
 	 * Imports relevant parts from global $TBE_STYLES (colorscheme)
@@ -681,7 +690,7 @@
 	'.$generator.'
 	<title>'.htmlspecialchars($title).'</title>
 	'.$this->docStyle().'
-	'.implode("\n", $this->JScodeLibArray).'
+	' . $this->renderJSlibraries() . implode("\n", $this->JScodeLibArray).'
 	'.$this->JScode.'
 	'.$this->wrapScriptTags(implode("\n", $this->JScodeArray)).'
 	<!--###POSTJSMARKER###-->
@@ -1995,6 +2004,160 @@
 		$pageInfo = $theIcon . '<em>[pid: ' . $pageRecord['uid'] . ']</em>';
 		return $pageInfo;
 	}
+
+
+	/**
+	 *  Following functions are help function for JS library include.
+	 *  They enable loading the libraries prototype, scriptaculous and extJS from contrib-directory
+	 */
+
+
+	/**
+	 * Function for render the JS-libraries in header
+	 * Load order is prototype / scriptaculous / extJS
+	 */
+	protected function renderJSlibraries() {
+		$libTags = '';
+		if ($this->addPrototype) {
+				// render prototype inclusion
+			$libTags .= '<!-- include prototype -->';
+			$libTags .=  chr(10) . '<script type="text/javascript" src="contrib/prototype/prototype.js"></script>';
+			    // remove prototype from JScodeLibArray
+			$this->removeLibFromArray('prototype');
+		}
+
+		if ($this->addScriptaculous) {
+				// render scriptaculous inclusion
+			$libTags .= chr(10) . '<!-- include scriptaculous -->';
+			$mods = array();
+			foreach ($this->scriptaculousModules as $key => $value) {
+				if ($this->scriptaculousModules[$key]) {
+					$mods[] = $key;
+				}
+			}
+				// solve dependencies
+			if (in_array('dragdrop', $mods) || in_array('controls', $mods)) {
+				$mods = array_merge(array('effects'), $mods);			
+			}
+			
+			if (count($mods)) {
+				$moduleLoadString = '?load=' . implode(',', $mods);
+			}
+			$libTags .= chr(10) . '<script type="text/javascript" src="contrib/scriptaculous/scriptaculous.js' . $moduleLoadString . '"></script>';
+				// remove scriptaculous from JScodeLibArray
+			$this->removeLibFromArray('scriptaculous');
+		}
+
+		if ($this->addExtJS) {
+			// render extJS inclusion
+			$libTags .= chr(10) . '<!-- include extJS -->';
+			if ($this->addPrototype) {
+					// add prototype adapter
+				$libTags .=  chr(10) . '<script type="text/javascript" src="contrib/extjs/adapter/prototype/ext-prototype-adapter.js"></script>';
+			} else {
+					// add extJS adapter
+				$libTags .=  chr(10) . '<script type="text/javascript" src="contrib/extjs/adapter/ext/ext-base.js"></script>';
+			}
+			if ($this->extJSDebug) {
+				$libTags .=  chr(10) . '<script type="text/javascript" src="contrib/extjs/ext-all-debug.js"></script>';
+			} else {
+				$libTags .=  chr(10) . '<script type="text/javascript" src="contrib/extjs/ext-all.js"></script>';
+			}
+				// set clear.gif
+			$this->extJScode .= 'Ext.BLANK_IMAGE_URL = "' . htmlspecialchars(t3lib_div::locationHeaderUrl('gfx/clear.gif')) . '";';
+				// remove extjs from JScodeLibArray
+			$this->removeLibFromArray('extjs');
+		}
+         
+		return $libTags ? chr(10) . chr(10) . $libTags . chr(10) . chr(10) : '';
+	}
+
+	/**
+	 *
+	 * @param string $lib	it will delete loading lib from general JScodeLibArray because lib is loaded already.
+	 */
+	protected function removeLibFromArray($lib) {
+		if (count($this->JScodeLibArray)) {
+			$scripts = array_keys($this->JScodeLibArray);
+			foreach ($scripts as $script) {
+				if (strpos('/' . $lib, $script)) {
+					unset ($this->JScodeLibArray[$script]);
+				}
+			}
+		}
+	}
+
+	/**
+	 *  call function if you need the prototype library
+	 */
+	public function loadPrototype() {
+		$this->addPrototype = true;
+	}
+
+	/**
+	 *  call function if you need the Scriptaculous library
+	 * @param string $modules   add modules you need. use "all" if you need complete modules
+	 */
+	public function loadScriptaculous($modules = '') {
+		$this->addScriptaculous = true;
+		if ($modules) {
+			$this->loadScriptaculousModules($modules);
+		}
+	}
+
+	/**
+	 *  call this function if you need additional modules for scriptaculous library
+	 * @param string $modules
+	 */
+	public function loadScriptaculousModules($modules) {
+		if ($modules) {
+			if ($modules == 'all') {
+				foreach ($this->scriptaculousModules as $key => $value) {
+					$this->scriptaculousModules[$key] = true;
+				}
+			} else {
+				$mods = t3lib_div::trimExplode(',', $modules);
+				foreach ($mods as $mod) {
+					if (isset($this->scriptaculousModules[strtolower($mod)])) {
+						$this->scriptaculousModules[strtolower($mod)] = true;
+					}
+				}
+			}
+		}
+	}
+
+	/**
+	 *  call this function if you need the extJS library
+	 * @param string $css
+	 */
+	public function loadExtJS($css = true, $theme = true) {
+		if (!$this->addExtJS) {
+			$this->addExtJS = true;
+			if ($css) {
+				if (isset($GLOBALS['TBE_STYLES']['extJS']['all'])) {
+					$this->addStyleSheet('ext-all', $GLOBALS['TBE_STYLES']['extJS']['all'], 'ext-all');
+				} else {
+					$this->addStyleSheet('ext-all', 'contrib/extjs/resources/css/ext-all.css', 'ext-all');
+				}
+			}
+			if ($theme) {
+				if (isset($GLOBALS['TBE_STYLES']['extJS']['theme'])) {
+					$this->addStyleSheet('ext-theme', $GLOBALS['TBE_STYLES']['extJS']['theme'], 'ext-theme');
+				} else {
+					$this->addStyleSheet('ext-theme', 'contrib/extjs/resources/css/xtheme-gray.css', 'ext-theme');
+				}
+			}
+		}
+	}
+
+	/**
+	 * call this function to load debug version of extJS. Use this for development only
+	 */
+	public function setExtJSDebug() {
+		$this->extJSDebug = 1;
+	}
+
+	
 }