You can specify preferences for
spacer image files and for the colors that Dreamweaver uses
to draw layout tables and layout cells.
Select Edit > Preferences (Windows)
or Dreamweaver > Preferences (Macintosh).
Select Layout Mode from the category list, set Layout
mode preferences, and click OK.
Autoinsert Spacers
specifies whether Dreamweaver automatically
inserts spacer images when you set a column to autostretch.
Note: If
you choose not to use spacer images in autostretch tables, fixed-width columns
might change size or even disappear completely from Design view
when they do not contain content. (The columns still exist in the
code, even if they don’t appear in Design view.)
Spacer Image
Sets the spacer image file for your sites.
Select
a site from the For Site menu, then click the Create button to create
a new spacer image file, or click the Browse button to locate an
existing spacer image file in that site.
Cell Outline
Sets the color of the outlines of layout cells.
Cell Highlight
Sets the color that layout cell outlines change to when
you move the pointer to point to a cell.
Table Outline
Sets the color of the outlines of layout tables.
Table Background
Sets the color used for areas of layout tables where
there are no layout cells.