rem: return this.isBlockElement(n); 
add: return tinyMCE.isBlockElement(n); 
context: 	return this.getParentNode(n, function(n) {		return this.isBlockElement(n);	});
meta: 2801	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2801/a609754e341f92c7bd78ab902fb876e771d1a54e/TinyMCE_DOMUtils.class.js/buggy/jscripts/tiny_mce/classes/TinyMCE_DOMUtils.class.js