I have some page types setup so people can choose. Page or TwoColumnPage or ThreeColumnPage.

TwoColumnPage has an additional htmlContent Field ColumTwo
ThreeColumnPage has 2 additional htmlContent Field ColumTwo, ColumThree

Setup Reasoning
1. because div management in tinymce editor is difficult
even if i use the tinymce template feature.
2. obviously don't want tables

this is a nice setup, but am wondering if i could give the user some hints as to column widths in the tinymce editor

I have notice that I can limit the Tinymce "inner" content area by putting styling in the typography.css file as that gets loaded in the CMS area.

I even managed to put in a background image to show the max column width.

----------typography.css extract ----

#tinymce.mceContentBody.typography{

width: 284px;
background-image: url(../tinymce/284_3col_mce_bg.gif);
background-repeat: repeat-y;
background-position: 10px 0px;
}

------------------------------------

the trouble is this affects all tinymce editors in the cms.

I can't seem to figure out how to be specific?

Question
Can i add a css file based on the page type the user is on "within the Admin area" ?

I don't think you can be specific like
#ColumnTwo #tinymce.mceContentBody.typography{

width: 284px;
background-image: url(../tinymce/284_3col_mce_bg.gif);
background-repeat: repeat-y;
background-position: 10px 0px;
}

The only reason behind this is the aid the Person doing the Content editing. Anything to force common sense :)