Determine Your Device Display Pixel Count for Width & Height
One thing I implemented a long time ago was a unique (my original idea) menu system that avoids an HTML file that contains hundreds of lines of drop-down menu code, on top of the actual web page content. I use multiple separate, categorized, selectable pages in an iFrame (inline frame). It is fast, compact, and never causes obnoxious behavior like menus that refuse to open or close or that obscure underlying content on the page.
WebsiteDimensions.com also provides some useful info on common screen sizes for various generations of desktops, tablets, and smartphones based on statistics gathered at the W3C website.
This page on Wikipedia has a very extensive list of display sizes on a per manufacturer basis.
Posted January 27, 2014