function doSearch(btnID) {
    var myKeyCode = 0;

    if (document.all) {
        // Internet Explorer 4+
        myKeyCode = event.keyCode;
    } else if (document.getElementById) {
        // Mozilla / Opera / etc.
        myKeyCode = event.which;
    }

    if (myKeyCode == 13) {
        var btn = document.getElementById(btnID);

        if (btn) {
            btn.click();

            event.cancelBubble = true;
            if (event.stopPropagation)
                event.stopPropagation();

            return false;
        }
    }

    return true;
}