I must possess a parent category like a mainmenu in horizontal view and child groups like a submenu that matches the mainmenu.

For instance,

Parent groups as Apple, Orange and Mango

Sub Category for Apple is apple1, apple2, apple3

Sub Category for Orange is orange1, orange2, orange3

Sub Category for mango is mango1, mango2, mango3

And so i have primary menu as Apple Orange Mango

so when u mouse over Apple then your apple1, apple2, apple3 ought to be visible at the end from the primary menu. same for other 2 menus.

Is possible?? could everyone assist me to within this??