<html> <head> <script type="text/javascript"> function lighton() { document.getElementById('myimage').src="bulbon.gif"; } function lightoff() { document.getElementById('myimage').src="bulboff.gif"; } </script> </head> <body> <img id="myimage" onmousedown="lighton()" onmouseup="lightoff()" src="bulboff.gif" width="100" height="180" /> <p>Click and hold to turn on the light!</p> </body> </html>
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