<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <script type="text/javascript"> function hello() { alert ('hello'); } </script> </head> <body> <a href='#' onclick='hello()'>Say Hello</a> </body> </html>