\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
%\usepackage[tex4ht, bookmarks=true]{hyperref}
-\usepackage[bookmarks=true]{hyperref}
+\usepackage[bookmarks=true,plainpages=false,pdfpagelabels,hyperfootnotes=false]{hyperref}
\usepackage{makeidx}
%\usepackage{booktabs}
%\usepackage{pstcol}