Function siblingCheck

documentation/javascript/application.js:5427–5443

( a, b, ret )

};

function siblingCheck( a, b, ret ) {
	if ( a === b ) {
		return ret;
	}

	var cur = a.nextSibling;

	while ( cur ) {
		if ( cur === b ) {
			return -1;
		}

		cur = cur.nextSibling;
	}

	return 1;
}

sortOrder = docElem.compareDocumentPosition ?
	function( a, b ) {