Help with a Selects onSelect

[BatGrrrL]

Hi,

Can someone please tell me where I'm going wrong here.

I'm making my own bill payment system in asp. A Select box is filled with the Names of the Billers.
<option value=&quot;<%= rs( &quot;BillerID&quot; ) %>&quot;><%= rs( &quot;BillerName&quot; ) %></option>
And hidden field is assigned a biller reference code.

<input type=&quot;hidden&quot;name=&quot;BR<%= rs( &quot;BillerID&quot; ) %>&quot; value=&quot;<%= rs( &quot;BillerRef&quot; ) %>&quot;>

So the BillerID is dynamic for each record, and the BR hidden field is dynamic too.

I would like a select box onChange event that changes an input box &quot;BillerRef&quot; to be equal to the corresponding hidden BR(ID) value.

Is there a way to get this statement (from my select box):
onChange=&quot;document.addBill.BillerRef.value= document.addBill.BR1.value;

to Be:
onChange=&quot;document.addBill.BillerRef.value= document.addBill.BR*ID OF SELECTED OPTION*.value; ?

The closest I've come is this, but I don't think it gets the options value properly (too many []s?)
onChange=&quot;document.addBill.BillerRef.value= document.addBill.BR[this.options[this.options.selectedIndex].value].value;

Any help would be appreciated!

Cheers
Batty

Sorry about the long winded question, I just like to give as much info as possible.

 

[BatGrrrL]

Ohh Solved:

<script language=&quot;JavaScript&quot;>
<!--
function popRef(BillerID)
{
var BID;
BID = BillerID.options[BillerID.options.selectedIndex].value;

var Brow;
Brow = eval(&quot;document.addBill.BR&quot; + BID + &quot;.value&quot;
document.addBill.BillerRef.value = Brow;
}
-->
</script>

<select name=&quot;BillerID&quot; id=&quot;BillerID&quot; onChange=&quot;popRef(this)&quot;>