thanks & a solution
Thanks for your comments.
<br style="clear: both; height: 0pt; font-size: 1px; line-height: 0px;">
had no effect.
I got around the problem by adding the following code just below <head>, just below <head> is important for it to work
<meta http-equiv="X-UA-Compatible" content="IE=ie8" />
This enforces IE8 to display the page in the IE8 Standards Mode engine