This file demonstrates an image button that does not contain any "alt" text.
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html lang="en"> <head> <title>alert 1.0/1.1.3</title> </head> <body> <input type="image" name="submit" src="submit.jpg" /> </body> </html>