<HTML><HEAD><TITLE>Dialog box demo</TITLE></HEAD><BODY><FORM><INPUT TYPE="BUTTON" VALUE="Alert" ONCLICK="alert('An alert dialog box.')"><INPUT TYPE="BUTTON" VALUE="Confirm" ONCLICK="confirm('A confirm dialog box.')"><INPUT TYPE="BUTTON" VALUE="Prompt" ONCLICK="prompt('A prompt dialog box.','Type something!')"></FORM></BODY></HTML>
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