Learning javascript - need help

I got a form created here:

http://www.lifemayhem.com/js/java.html

I got 2 forms, one dropdown, and one radio.

When i choose a value for both form and click "Validez Champs"

I need to display the selected value in the input text box at bottom of table in the respective column.

Cant figure how to do it. Any one can drive me in the rigth direction ?

 

use this

function getQuerystring(key, default_)
{
  if (default_==null) default_=""; 
  key = key.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regex = new RegExp("[\\?&]"+key+"=([^&#]*)");
  var qs = regex.exec(window.location.href);
  if(qs == null)
    return default_;
  else
    return qs[1];
}

Code (markup):

orig link: http://www.bloggingdeveloper.com/po...-QueryString-with-Client-Side-JavaScript.aspx

 

gapz101 thank you !