function makeTwoChars(inp) {
        return String(inp).length < 2 ? "0" + inp : inp;
}

function initialiseInputs() {
        document.getElementById("ood").value = "";
        document.getElementById("doo").value = "";
        document.getElementById("ood").onchange = setReservationDates;
}
function setReservationDates(e) {
        if(!("ood" in datePickerController.datePickers)) {
                return;
        }
        var dt = datePickerController.dateFormat(this.value, datePickerController.datePickers["ood"].format.charAt(0) == "m");
        if(dt == 0) return;
        var edv = datePickerController.dateFormat(document.getElementById("doo").value, datePickerController.datePickers["doo"].format.charAt(0) == "m");
        var doo = datePickerController.datePickers["doo"];
        doo.setRangeLow( dt );
        if(edv < dt) {
                document.getElementById("doo").value = "";
        }
}
datePickerController.addEvent(window, 'load', initialiseInputs);