IE7.js has been designed to assist with various properties as listed below:
Property Comments Test
background-attachment support fixed positioning html
background-image PNG alpha transparency (IE5.5+) html
bottom height implied if top is supplied html
cursor support pointer for IE5.x html
display convert list-item to block for IE5.x
font-size fix named font sizes (IE5.x) html
margin support auto (IE5.x) html
max-height html
max-width html
min-height implemented for IE5 html
min-width html
overflow support overflow:visible html
position support fixed positioning html
right width implied if left is supplied html
IE8.js, on the other hand, provides support for the following features:
Selector Comments Test
::after html
::before html
:active html
:focus html
:lang() html
CSS Properties
Property Comments Test
border-spacing HTML tables only html
box-sizing content-box (assumed) html
content Supports the use of attr() and url() html
property: inherit Support for inherited property values html