Index title space

Currently my index has in bold letters the word Index as it’s title. So far so good. The problem is that my index is 5 columns and the title is only 1 column wide yet pushes all 5 down. How can I get the other 4 columns to move up (moving up column 1 would be nice but is less important) so I don’t have a big empty space (good for at least 40 index entries) at the top? I think that having that much empty space at the index is a waste of space. On the next page, the margins aren’t a problem. It’s just that huge empty space on the first index page. I can edit idxlayout to produce a section or just bold text for the index title but not only is that a really ugly solution, it still won’t put the index title in column one.

I’m looking to get something along the lines of:

Index Entry Entry Entry Entry

Entry Entry Entry Entry Entry

Where now I have this:

Index [big empty space]

[More empty space]

Entry Entry Entry Entry Entry

I like that the index is in the table of contents as a chapter and if possible I would like to keep it that way, but I can work around that I think. I use the idxlayout and makeidx packages for making the index as in:

documentclass[10pt, twoside, a4paper, twocolumn, openany, makeidx]{book}
usepackage[totoc, initsep=0pt, columns=5, columnsep=10pt, hangindent=3pt, subindent=8pt, subsubindent=10pt]{idxlayout}
usepackage{makeidx}
makeatother
makeindex
begin{document}
index{Word} index{WordTwo}

begin{footnotesize}
printindex
end{footnotesize}
end{document}

Edit: sample code