Drop Down Menu /w Root Button Hover In-Tact (JavaScript)

in FireFox

• A
• B
  • B 1
  • B 2
    • B 2 A
    • B 2 B
    • B 2 C
  • B 3
• C

For IE, onmouseover, and onmouseout had to be placed on the parent <li> of the sub <ul>. But normally, you would only need to apply on the <li> which surrounds/applys all childs.