function isEq(str1, str2) {
			str1 = str1 || '';
			str2 = str2 || '';

			str1 = '' + (str1.nodeName || str1);
			str2 = '' + (str2.nodeName || str2);

			return str1.toLowerCase() == str2.toLowerCase();
		}
Compares two string/nodes regardless of their case.

@private
@param {String/Node} str1 Node or string to compare.
@param {String/Node} str2 Node or string to compare.
@return {boolean} True/false if they match.