function OpenItem(id, flag)
{
    var element = document.getElementById(id);
    var showStyle = flag ? "" : "none";     
    var handlerIcon = flag ? "right_menu_marker_minus.gif" : "right_menu_marker_plus.gif";
    
    element.style.display = showStyle;
    element.opened = flag ? 1 : 0;          
    
    iconElement = document.getElementById(id + "_icon_element");
    iconElement.src = "/images/" + handlerIcon;
}

function SwitchItem(id)
{
    var element = document.getElementById(id);
    var newState = element.opened ? 0 : 1;
    OpenItem(id, newState);
}