javascript: indesign already in library

gistfile1

function in_library (library_string, name) {	
	var my_reg_exp = new RegExp( "::"	+ remove_file_extension(name) + "::" ); // use separation symbol
	var result = false;
	if(my_reg_exp.test( library_string )) {
		result = true;
	};
	return result;
};