I am working on a page that consists of a header and three other divs: two
sidebars enveloping main content. I am trying to re-position the right-sided
sidebar (sidebar 2) so that it abuts next to the right side of main content,
but every time I do it forces the main content div to drop down as if to
provide room for the vertical size of the content of that sidebar. It's as
though sidebar 2 is aligning next to the left-sided sidebar instead...even
though there is no visible sidebar 2 content above the main content div--just
empty space.

Can anybody help me? I need to set this up so that the top margin of the
sidebars and main content are at the same location below the header. Thanks.

float it the right.

in your css file

#sidebar2
{
float:right;
......
also, do you have a link to your page?
......
}

No, it hasn't been uploaded yet. As soon as that's the case, I'll forward the address to you. Thanks very much for the help.

ok, for a basic positioning example, have a look at this
page:http://www.malcmabe.co.uk/float.html

the css is http://www.malcmabe.co.uk/float.css

note that everything is positioned within a main wrapper div, which is always
a good ideal. don't know if you have this in yours

malc