Fix Firefox 18.0.2 complaining about a missing parameter for a setter

Author: Christoph Burgmer

lib/CSSValue.js

@@ -16,7 +16,7 @@ CSSOM.CSSValue.prototype = {
 	constructor: CSSOM.CSSValue,
 
 	// @see: http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSValue
-	set cssText() {
+	set cssText(text) {
 		var name = this._getConstructorName();
 
 		throw new Exception('DOMException: property "cssText" of "' + name + '" is readonly!');