wxHtmlHelpDataItem *parent = m_index[i].parent;
for (int j = i-1; j >= 0; j--)
{
if (m_index[j].book == book && m_index[j].level > 0)
wxHtmlHelpDataItem *parent = m_index[i].parent;
for (int j = i-1; j >= 0; j--)
{
if (m_index[j].book == book && m_index[j].level > 0)