Semi transparent backgrounds

[benjamin]

I have a page with the bgproperties="fixed" in the body tag, now in my document i want a table with a grey background which is 50% clear so you can see the background slide behind it as you scroll, how would this be done?

[DaveSW]

I guess you could use semitransparency in a .png format.

<table style="background-image: url(semitransparentpng.png)">

...

However, I wouldn't recommend doing it because:

1) pngs aren't fully supported by all browsers
2) if it fails, will the table be readable?