Greek text display issues on Perseus project's site

I was having a hard time trying to read the ancient Greek texts on the Perseus Project site using either of the web browsers that I'm using, Google's Chrome and Apple's Safari. The Greek text by default is rendered somewhat garbled, making it rather unintelligible. Fortunately the display is configurable. By selecting  `Unicode (combining diacriticals)' instead of the default `Unicode (precombined)', in the display preferences pane on the right of the text, the Greek text becomes much more readable.