get first characters in form

the script below passes a form entry to a hidden field...

<script language="JavaScript"><!--
function copyData(from,to) { to.value = left(from.value),2; }
//--></script>

how can I get this to copy just the first two characters

robert_fAsked:
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RoonaanCommented:
from.value.substring(0,2);

-r-
0

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Sys_ProgCommented:
The following link has various JS string functions

http://www.w3schools.com/jsref/jsref_obj_string.asp

You could use

1. substr
2. substring
3. charAt
..
...
Amit
0
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