From mouse events: mousedown, mouseup and click, dblclick, mousemove and finally mouseover and mouseout. Like wasn’t enough the bad css support, IE have a strange way to look at an event object what is working just fine on any other browser.

IE6-7 incorrectly scrolls an applied element background for textarea field or overflows an input field in forms. Even the most common css hack suggested is to use the fixed position for background attachment, sometimes this isn’t enough.