Refined slideToggle, addMsg Functions

Created function to add new mail messages after the initial set.
Removed unnecessary CSS for msgContainer and msgHead
Added Inbox Message Counter

Added Javascript Function to update the total number of messages in the
Inbox.
Rewrote Initial Load, JQuery function, refined addMsg function

Removed document.write code on initial load and used the addMsg created
function with injected onclick code to the Toggle function.
Updated CSS to style page