m_ctyrlistek_on = new Image();
m_ctyrlistek_off = new Image();
m_special_on = new Image();
m_special_off = new Image();
m_knizky_on = new Image();
m_knizky_off = new Image();
m_obchod_on = new Image();
m_obchod_off = new Image();
m_hrajtesi_on = new Image();
m_hrajtesi_off = new Image();
m_serial_on = new Image();
m_serial_off = new Image();
m_ctyrlistek_on.src = "images/m_btn_ctyrlistek_ro.png";
m_ctyrlistek_off.src = "images/m_btn_ctyrlistek.png";
m_special_on.src = "images/m_btn_special_ro.png";
m_special_off.src = "images/m_btn_special.png";
m_knizky_on.src = "images/m_btn_knizky_ro.png";
m_knizky_off.src = "images/m_btn_knizky.png";
m_obchod_on.src = "images/m_btn_obchod_ro.png";
m_obchod_off.src = "images/m_btn_obchod.png";
m_hrajtesi_on.src = "images/m_btn_hrajtesi_ro.png";
m_hrajtesi_off.src = "images/m_btn_hrajtesi.png";
m_serial_on.src = "images/left_btn_ro.png";
m_serial_off.src = "images/left_btn.png";


function button_on(imgId) {
    if (document.images) {
        butOn = eval(imgId + "_on.src");
        document.getElementById(imgId).src = butOn;
    }
}

function button_off(imgId) {
    if (document.images) {
        butOff = eval(imgId + "_off.src");
        document.getElementById(imgId).src = butOff;
    }
}

function fnTrapKD(btn, event) {

    if (document.all) {

        if (event.keyCode == 13) {

            event.returnValue = false;

            event.cancel = true;

            btn.click();

        }

    }

    else if (document.getElementById) {

        if (event.which == 13) {

            event.returnValue = false;

            event.cancel = true;

            btn.click();

        }

    }

    else if (document.layers) {

        if (event.which == 13) {

            event.returnValue = false;

            event.cancel = true;

            btn.click();

        }

    }

}

function search() {
    window.location = "../Hledat.aspx?a=" + document.getElementById('query').value;
}