Internet Explorer and Objects
valueOf and toString
The 'with' keyword is used to reduce the need to specify object names in your code.
You can find out if and where one piece of text is contained within another text string by using the indexOf method.
Getting Started With Cookies
Checking on the colour or background colour assigned to a particular object on the page is not quite as simple as you think because different browsers supply the information in different formats. You need to test the same colour in three different formats to get consistent cross browser results.