Download and play with buttons. I was studying SVG DOM and this counter was my study tool. Sorry for misspell in the code. Replace "brake" with "break" everywhere it appears in the "switch" procedure or use Tom's remix to avoid annoying error alerts in IE+Renesis. I have my own version of similar to Tom's code, but do not want to spam OpenClipart.org
7段指標。玩按鈕
7-segments indicator、animated、animation、clickable buttons、counter、ECMAScript、interactive、lcd、Logger、mouse events、SVG DOM
7段指標、動畫、動畫、可點擊的按鈕、計數器、ECMAScript中、互動、液晶顯示、記錄儀、鼠標事件、SVG DOM
資料來源：openclipart ( https://openclipart.org/ )