WSXGA and WXGA+ are non-standard terms referring to computer display resolutions. Usually they refer to a resolution of 1440x900, but occasionally manufacturers use the terms to refer to other resolutions (for example, ). The Standard Panels Working Group refers to the 1440x900 resolution as WXGA(II).
WSXGA and WXGA+ can be thought of as enhanced versions of WXGA with more pixels, or as widescreen variants of SXGA. The aspect ratios of each are 16:10 (widescreen).
WXGA+ (1440x900) resolution is common in 19" widescreen desktop monitors (a very small number of such monitors uses WSXGA+), and is also optional, although less common, in laptop LCDs, in sizes ranging from 12.1" to 17".
For more : http://en.wikipedia.org/wiki/WSXGA_Wide_XGA%2B