email subject filled

[robertsont]

<INPUT TYPE="submit" VALUE="Open an email to Britech" onClick="parent.location='mailto:tom.robertson@britech.org?subject=Results from Partner Search&cc=tom.robertson@britech.org&body=Please attach the file you saved to this email.'">

I'm using this code to open an email with certain info completed. Is it possible to have the subject return whatever is entered into a certain field in my form on the host page?

regards,

Tom