Pass contents of dreamweaver form field..

Question

Hello from my script below:
<script type="text/javascript">
function OnSubmitForm() 
  if(document.myform.operation[0].checked == true) 
    document.myform.action ="https://webtrace.etdatacenter.com/webtrace.aspx?accesstype=autologin&cust=id_015&user=temp lateuser"; 
  else
  if(document.myform.operation[1].checked == true) 
    document.myform.action ="https://carrierconnect.etdatacenter.com/Default.aspx?accesstype=autologin&cust=id_015&user =username"; 
  return true; 
</script>
<form name="myform" target="_blank" method="post" action="" onsubmit="return OnSubmitForm();">  
<fieldset>
<legend><font color="#FFFFFF">LOGIN</font></legend> 
username: <input type="text" name="username"/><br /><br />
password: <input type="password" name="password"/><br /> 
<input type="radio" name="operation" value="1" checked="checked"/><font size="-1">Customer Tracking</font> 
<input type="radio" name="operation" value="2" /><font size="-1">Web Booking  </font>
<input type="submit" name="submit" value="submit" />
</fieldset>
</form>
The user fills in their username and password then selects either 'customer tracking' or 'web booking' radio button.....Based on the radio button selected they are directed either to
https://webtrace.etdatacenter.com/webtrace.aspx?accesstype=autologin&cust=id_015&user=user name if 'customer tracking' or
https://carrierconnect.etdatacenter.com/Default.aspx?accesstype=autologin&cust=id_015&user =username if 'web booking'
How do I pass the contents of the username where I have currently 'username' which is the form field, but I need to pass the contents.
thanks

Answer 1

  if(document.myform.operation[0].checked == true)
    document.myform.action ="https://webtrace.etdatacenter.com/webtrace.aspx?accesstype=autologin&c ust=id_015&user=templateuser";
  else
  if(document.myform.operation[1].checked == true)
    document.myform.action ="https://carrierconnect.etdatacenter.com/Default.aspx?accesstype=autolo gin&cust=id_015&user=" + document.myform.username.value;