function xnpbookGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_book.gif', _MD_XNPBOOK_EXPLANATION, false, false);
}
function xnpmodelGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_model.gif', _MD_XNPMODEL_EXPLANATION, 'xnpmodel_model_type', xnpmodel_get_type_array());
}
function xnppresentationGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_presentation.gif', _MD_XNPPRESENTATION_EXPLANATION, 'xnppresentation_presentation_type', xnppresentationGetTypes());
}
function xnpfilesGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_files.gif', _MD_XNPFILES_EXPLANATION, 'xnpfiles_data_file_filetype', xnpfilesGetTypes());
}
function xnpconferenceGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_conference.gif', _MD_XNPCONFERENCE_EXPLANATION, 'xnpconference_presentation_type', xnpconferenceGetTypes());
}
function xnpsimulatorGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_simulator.gif', _MD_XNPSIMULATOR_EXPLANATION, 'xnpsimulator_simulator_type', xnpsimulator_get_type_array());
}
function xnppaperGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_paper.gif', _MD_XNPPAPER_EXPLANATION, false, false);
}
function xnpdataGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_data.gif', _MD_XNPDATA_EXPLANATION, 'xnpdata_data_type', xnpdataGetTypes());
}
function xnpmemoGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_memo.gif', _MD_XNPMEMO_EXPLANATION, false, false);
}
function xnptoolGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_tool.gif', _MD_XNPTOOL_EXPLANATION, 'xnptool_tool_type', xnptool_get_type_array());
}
function xnpurlGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_url.gif', _MD_XNPURL_EXPLANATION, false, false);
}
function xnpstimulusGetTopBlock($itemtype)
{
    return xnpGetTopBlock($itemtype['name'], $itemtype['display_name'], 'images/icon_stimulus.gif', _MD_XNPSTIMULUS_EXPLANATION, 'xnpstimulus_stimulus_type', xnpstimulus_get_type_array());
}