<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Javascript Addition</title> <style> body { background-color:#093; padding:0px; margin:0px; font-family:Verdana, Geneva, sans-serif; font-size:12px; } .frm1 { border:2px solid #006; } </style> </head> <body> <script> function sum() { var txtFN = parseInt(document.getElementById('txt1').value); var txtSN = parseInt(document.getElementById('txt2').value); var result = parseInt(txtFN) + parseInt(txtSN); ...