How to position a submenu relative to its parent?

How to position a submenu relative to its parent?

References

Reference NO 1

http://stackoverflow.com/questions/13632454/how-to-position-a-submenu-relative-to-its-parent

Reference NO 2

http://stackoverflow.com/questions/16460017/how-to-position-sub-menu-directly-below-parent-ul-unorder-list

Reference NO 3

http://archivist.incutio.com/viewlist/css-discuss/73535

Reference NO 4

http://www.sitepoint.com/forums/showthread.php?750400-Submenu-Not-positioning-under-parent-menu

Reference NO 5

http://www.vanseodesign.com/css/auto-positioning/

Reference NO 6

http://social.msdn.microsoft.com/Forums/vstudio/en-US/ac334958-17e7-42e4-bd7c-b85256bdc1a1/action?threadDisplayName=getting-the-position-of-a-menuitem-relative-to-its-parent

Reference NO 7

http://www.projectseven.com/products/menusystems/pmm/user_guide/getting_started/pmm_ug_create.htm

Reference NO 8

http://forums.adobe.com/message/4619083