Disable a form control
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /> <title>Disabled form control</title> </head> <body> <form> <p><input type="button" onclick="this.disabled=true;" onkeypress="this.disabled=true;" value="submit" /></p> </form> </body> </html>