Date format – how?

hello, i have a JavaScript Calendar which picks date and inserts into FIELD..
and its format is : [B]3-4-2008 23:6:28[/B]

But i want to change it to: [B]2008-04-25 21:08:25[/B]

how can i change this..

here is a bit of code where i think this must be changed, but i am realy 0 in JS..

[CODE]
// datetime format
function str2dt (str_datetime) {

if (!re_date.exec(str_datetime))
return alert(“Invalid Datetime format: “+ str_datetime);
return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1, RegExp.$4, RegExp.$5, RegExp.$6));
}
function dt2dtstr (dt_datetime) {
return (new String (
dt_datetime.getDate()+”-“+(dt_datetime.getMonth()+1)+”-“+dt_datetime.getFullYear()+” “));
}
function dt2tmstr (dt_datetime) {
return (new String (
dt_datetime.getHours()+”:”+dt_datetime.getMinutes()+”:”+dt_datetime.getSeconds()));
}

[/CODE]

thank you

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