[OOP-noob] Process numbered fields by id-number ? (also posted in DOM)

Hi all,

beeing a compleet newb to OOP, I could probably use (a lot of) help with the following:

Have a form with a couple of lines of dates (date1, date2, date3, etc.)
Each date-field gets filled by 3 drop-downs (day1/mnth1/yr1, day2/mnth2/yr2, etc.)

My question is, can I now do this ?



//javascript
function DatumZetten(id)
{
var day = this.document.form.day[id].value;
var month = this.document.form.mnth[id].value;
var year = this.document.form.yr[id].value;
this.document.form.Datum[id].value = '' + year + '-' + month + '-' + day + '';
}

//html
<input type="text" OnBlur="DatumZetten(1)">



Any and all help will be greatly appreciated.
Many thanx in advance.

P.S. Mods, if double-post is not appreciated, plz remove the least well-placed post ;)

already got an answer here: http://www.webdeveloper.com/forum/showthread.php?t=138058

Eric

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