Message: HTML Parsing Error: Unable to modify the parent container element before the child element is closed (KB927917)

This issues happens when modifying document while it's being loaded (when browser hasn't "seen" closing tag for this element) . This causes very tricky situation in the parser and in IE it's not allowed For more explanation please vists the IE blog

http://blogs.msdn.com/b/ie/archive/2008/04/23/what-happened-to-operation-aborted.aspx

http://stackoverflow.com/questions/301484/problem-with-html-parser-in-ie