Simple function w/ Name Help

[jwoods7]

I want to create a function that will change the value of a text box. The hard part is passing the variables to the function and having it know that it's a variable, not the name of a textbox!
For example, if I have a textbox named "box1" and I want to change the status to "Current", I could use
changeStatus('box1','Current')
How do I call that in the document.flightpurchase.???.value

function changeStatus(name,status) {

document.flightpurchase. + name + .value = status

}

[jwoods7]

I sort of solved my own question through trial-and-error:
"document.flightpurchase[name].value = status

However, I found another problem.
I have a radio button that when clicked, changes the status to something. Then, when another radio button is checked, the status returns to another thing...

So in a sense, I want to have text boxes that have a value written within it depending on whether or not the corresponding radio button is checked...

So far the "onClick=changeStatus('box1','Current')" works, but I can't figure out how to change it back after it's not selected anymore

"onunClick=changeStatus('box1','Current')"
"onChange=changeStatus('box1','Current')"

none of these work...

[RadarBob]

function getRadioValue (radioObject) {
   var value =  null;

   for (var i=0; i<radioObject.length; i++) {
      if (radioObject[i].checked)
         value = radioObject[i].value;
   }
   return value;
}

// pass the whole form (sure, why not!) and the specific radio value to the function
function fillTheBox (radioValue, yourform) {
   switch (radioValue)  {
      case "aValueYouGaveThe1stRadioButton" :
         yourform.textbox0.value = 'current';
         yourform.textbox1.value = "";
         yourform.textbox2.value = "";
            ... and so on...
          break;

     case "the2ndradiobuttonvalue":
        yourform.textbox1.value = "current";
        yourform.textbox0.value = "";
        yourform.textbox2.value = "";
           ... and so on...
        break;

     default:
          .... default values for the textboxes and radio object here.
         break;

   }// switch ()
}

// here's code that calls the above. Put it in the appropriate place(s)

var whatRadio = new String();  // or whatever type is appropriate

whatRadio = getRadioValue (myradiobuttonname);
fillthebox (whatRadio, theformname);