Need help

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
 <HEAD>
  <TITLE> Form </TITLE>
  <META NAME="Generator" CONTENT="EditPlus">
  <META NAME="Author" CONTENT="Dan Kavic">
  <META NAME="Keywords" CONTENT="">
  <META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">


var browser=navigator.appName
var bversion=navigator.appVersion
var version=parseFloat(bversion);
document.write("Browser name: "+ browser)
document.write("<br />")
document.write("Browser version: "+ version)

document.write("<br />")
</script>

 </HEAD>

 <BODY>
<br><br>
<form name="personalinfo">
First name: <input type="text" name="firstname" size="15"><br /><br />
Email:  <input type="text" name="email" size="30" /><br /><br />
Location:  <table border="0" cellspacing="0" cellpadding="0">
  <tr align="center"> 
    <td nowrap height="11"> &nbsp;

<select name="forms" size="1" onChange="redirect(this.options.selectedIndex)">
<option selected>Select</option>
<option>Northeast USA</option>
<option>Northwest USA</option>
<option>Southeast USA</option>
<option>Southwest USA</option>
<option>Central USA</option>
</select><br />
 <br /><input type="button" name="button" value="Check The Form"  onclick="javascript:checkForm('personalinfo')"/>
</form>





 </BODY>
</HTML>