Stop Div from stacking improperly in CSS

I have used a CSS layout grid system (960.gs) It is a liquid system, and for some reason the header-right and开发者_如何学运维 content right divs are not staying on the same line to the right. Does anyone know why this would be? Thanks

alt text http://img228.imageshack.us/img228/6575/screenshot20100810at104.png

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Huh?

Perhaps you need to set explicit widths for your DIVs, if I guess correctly.

Give them either a float or a position in CSS, then force their width (also in CSS).

<div id='one' style='float:left;width:20%'>One</div>
<div id='two' style='float:left;width:80%'>Two</div>

<div id='three' style='float:left;width:20%'>Three</div>
<div id='four' style='float:left;width:80%'>Four</div>

<div id='five' style='float:left;width:20%'>Five</div>
<div id='six' style='float:left;width:80%'>Six</div>

etc.

UPDATED:

If the problem is to the right, then it's a similar solution. It looks as though the borders, padding, or margin is throwing off the widths. To use my example above...

<div id='five' style='float:right;width:20%'>Five</div>
<div id='six' style='float:right;width:80%;margin:5px'>Six</div>

Div Six will now appear on a different line since the 5px margin pushes it beyond 100%.