// Validates form field data for signs/donate page
function validate_donate_form ( )
{
    valid = true;
    if ( document.donationForm.amount.value == "" )
    {
        alert ( "Please enter an amount in Euros first." );
        valid = false;
    }
    return valid;
}
function validate_donatemonthly_form ( )
{
    valid = true;
    if ( document.subStage1.subamount.value == "" )
    {
        alert ( "Please enter an amount in Euros/Month first." );
        valid = false;
    }
    return valid;
}