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Percentage dimensions of the left menu layout

Two column left menu layout dimensions

All the dimensions are in percentage widths so the layout adjusts to any screen resolution. Vertical dimensions are not set so they stretch to the height of the content.

Concentration, Ordering and Oligomerization

The extreme dilutions expected at the introduction of organic compounds in the terrestrial hydrosphere makes it necessary to identify natural means for concentration; these also need to be selective. As an effective process in this respect, we are studying charge selective sorption on surface-active minerals. In this way, it has been possible, in model experiments, to raise the concentration of molecular ions such as glycolaldehyde phosphate, ferrocyanide, and oligophosphates, from 10 exp-5M in natural solutions to the order of 10 M in the sorbed interlayer solution in bilateral surface-active minerals.

800 x 600
Left column: 162 pixels
Main page: 550 pixels
1024 x 768
Left column: 210 pixels
Main page: 709 pixels

The nested div structure

I've colour coded each div so it's easy to see:

Two column left menu layout nested div structure

The header, colmask and footer divs are 100% wide and stacked vertically one after the other. Colleft is inside colmask. The two column content divs (col1 & col2) are inside colleft. Notice that the main content column (col1) comes before the side column.

I've colour coded each div so it's easy to see:

Two column left menu layout nested div structure

The header, colmask and footer divs are 100% wide and stacked vertically one after the other. Colleft is inside colmask. The two column content divs (col1 & col2) are inside colleft. Notice that the main content column (col1) comes before the side column.

No CSS hacks

The CSS used for this layout is 100% valid and hack free. To overcome Internet Explorer's broken box model, no horizontal padding or margins are used. Instead, this design uses percentage widths and clever relative positioning.

SEO friendly 2-1 column ordering

The higher up content is in your page code, the more important it is considered by search engine algorithms (see my article on link source ordering for more details on how this affects links). To make your website as optimised as possible your main page content must come before the side columns. This layout does exactly that: The the right-hand main page comes first, then the left column (see the nested div structure diagram for more info). The columns can also be configured in the opposite order if required.

Full length column background colours

In this layout the background colours of each column will always stretch to the length of the longest column. This feature was traditionally only available with table based layouts but now with a little CSS trickery we can do exactly the same with divs. Say goodbye to annoying short columns! You can read my article on equal height columns if you want to see how this is done.

No Images

This layout requires no images. Many CSS website designs need images to colour in the column backgrounds but that is not necessary with this design. Why waste bandwidth and precious HTTP requests when you can do everything in pure CSS and XHTML?

No JavaScript

JavaScript is not required. Some website layouts rely on JavaScript hacks to resize divs and force elements into place but you won't see any of that nonsense here.

Resizable text compatible

This layout is fully compatible with resizable text. Resizable text is important for web accessibility. People who are vision impaired can make the text larger so it's easier for them to read. It is becoming increasingly more important to make your website resizable text compatible because people are expecting higher levels of web accessibility. Apple have made resizing the text on a website simple with the pinch gesture on their multi-touch trackpad. So far this trackpad is only available on the MacBook Air but it will soon be rolled out to all of their systems. Is your website text-resizing compatible?

Mode

This layout does not require the XML declaration for it to display correctly in older versions of Internet Explorer.

No IE Conditional Comments

Only one stylesheet is used with this layout This means that IE conditional comments are not needed to set extra CSS rules for older versions of Internet Explorer.

Browser Compatibility

This left menu Layout has been tested on the following browsers:

iPhone & iPod Touch

  • Safari

Mac

  • Safari
  • Firefox
  • Opera 9.25
  • Netscape 9.0.0.5 & 7.1

Windows

  • Firefox 1.5, 2 & 3
  • Safari
  • Opera 8.1 & 9
  • Google Chrome
  • Explorer 5.5, 6 & 7
  • Netscape 8

Valid XHTML strict markup

The HTML in this layout validates as XHTML 1.0 strict.

This layout is for anyone to use

That's right, design your own website.

Centered menus compatible

This layout is fully compatible with cross-browser compatible centered menus.