Two problems

Hi all, I have to problems with php chm. In php_manual_en.chm (tested the last few versions) vey often happens that when I look for a word in the index the index itself does not scroll to the word or to similar words, but it keeps showing the first term, ".NET functions" selected. When that happens, I have to restart Windows, just to hope that then it will work. The problem I have with the php_manual_sample_7, is that text in the examples looks unreadable, because the grey background covers the words. I suppose it's a problem in the css file I use (line-height value?), but I didn't have time enough to fix the problem. Did anybody find the same problem and fix it? Moreover, I get an IExplorer 404 error for several pages (for instance "About the manual", "acosh", "Array operators"...). I use Windows 98 (not second edition) and Internet Explorer 6. Thank you in advance for any suggestion. Carlo.