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<!DOCTYPE html> <html> <body> <img src="klematis.jpg" alt="flower" width="150" height="113"> <img src="klematis2.jpg" alt="flower" width="152" height="128"> <img id="myImg" src="smiley.gif" alt="Smiley face" width="42" height="42"> <p>Click the button to add a black dotted border of the first image in the document.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.images[0]; x.style.border = "10px dotted black"; } </script> </body> </html>