Index: t3lib/class.t3lib_pagerenderer.php
===================================================================
--- t3lib/class.t3lib_pagerenderer.php	(revision 8060)
+++ t3lib/class.t3lib_pagerenderer.php	(working copy)
@@ -589,18 +589,59 @@
 	/*****************************************************/
 
 	/**
-	 * Adds meta data
+	 * Adds meta tag
 	 *
-	 * @param string $meta	meta data (complete metatag)
+	 * @param string $name	name attribute of meta tag
+	 * @param string $content	content attribute of meta tag
+	 * @param array $additionalParameter	key/value pairs of additional attributes
 	 * @return void
 	 */
-	public function addMetaTag($meta) {
-		if (!in_array($meta, $this->metaTags)) {
+	public function addMetaTag($name, $content = '', array $additionalParameter = array()) {
+		$additionalAttributes = '';
+			// backward compatibility, check for complete meta tag
+		if (t3lib_div::isFirstPartOfStr($name, '<')) {
+			$meta = $name;
+		} else {
+			if (count($additionalParameter) > 0) {
+				foreach ($additionalParameter as $attributeName => $attributeValue) {
+					$additionalAttributes .= htmlspecialchars($attributeName) . '="' . htmlspecialchars($attributeValue) . '" ';
+				}
+			}
+			$meta = '<meta name="' . htmlspecialchars($name) . '" ' .
+					'content="' . htmlspecialchars($content) . '" ' .
+					$additionalAttributes . '/>';
+		}
+
+		if (!t3lib_div::inArray($this->metaTags, $meta)) {
 			$this->metaTags[] = $meta;
 		}
 	}
 
 	/**
+	 * Adds meta tag for http-equiv
+	 *
+	 * @param string $httpEquiv httpEquiv attribute of meta tag
+	 * @param string $content	content attribute of meta tag
+	 * @param array $additionalParameter	key/value pairs of additional attributes
+	 * @return void
+	 */
+	public function addMetaTagHttpEquiv($httpEquiv, $content, array $additionalParameter = array()) {
+		$additionalAttributes = '';
+		if (count($additionalParameter) > 0) {
+			foreach ($additionalParameter as $attributeName => $attributeValue) {
+				$additionalAttributes .= htmlspecialchars($attributeName) . '="' . htmlspecialchars($attributeValue) . '" ';
+			}
+		}
+		$meta = '<meta http-equiv="' . htmlspecialchars($httpEquiv) . '" ' .
+				'content="' . htmlspecialchars($content) . '" ' .
+				$additionalAttributes . '/>';
+
+		if (!t3lib_div::inArray($this->metaTags, $meta)) {
+			$this->metaTags[] = $meta;
+		}
+	}
+
+	/**
 	 * Adds inline HTML comment
 	 *
 	 * @param string $comment