<html><head><style> #myDIV { width: 100px; height: 100px; background: red; transition: width 2s; /* For Safari 3.1 to 6.0 */ transition: width 2s;}#myDIV:hover { width: 400px;}</style></head><body><p>Hover over the div element below, and wait for the transition effect to end.</p><div id="myDIV"></div><p><b>Note:</b> This example does not work in Internet Explorer 9 and earlier versions.</p><script>// Code for Safari 3.1 to 6.0document.getElementById("myDIV").addEventListener("webkitTransitionEnd", myFunction);// Standard syntaxdocument.getElementById("myDIV").addEventListener("transitionend", myFunction);function myFunction() { this.innerHTML = "transitionend event occured - The transition has completed"; this.style.backgroundColor = "pink";}</script></body></html>