CSS3 Pie drop down menu jumps when link clicked
I am experiencing an issue with a drop down menu in which I have integrated CSS3 Pie. In Internet Explorer 8 when clicking a link initially the drop down menu loads fine but the second time I click the link the menu stars on the top left of the header then jumps into place where it should be.
I have uploaded the menu to http://www.lyyk.com/main.html
I have also uploaded the two stages with the initial top left menu and the second stage where the menu is normal to the image found at http://img292.imagevenue.com/img.php?image=628010400_css3piemenu_122_85lo.jpg
The CSS code is included in the source file at the link above and your help would be very much appreciated.