TimelineJS (http://timeline.knightlab.com/) is an simple tool that enables you to build visually-rich interactive timelines and is available in 40 languages. Before posting, please look at the FAQ (http://timeline.knightlab.com/#help) and search this forum. Please remember: for almost every question, it will help if you can post a link to your Google Spreadsheet (if you're using one) and the Timeline that you're asking a question about.