Need HTML Codes

[Achintha_c]

Dear All I need to create a menu for web page like this

[-] Topic 01
| [-] Sub Topic 01
| | |
| | [+] Sub Topic
| [+] Sub Topic 02
|
[+] Topic 02
|
[ -] Topic 03
|
[+] Sub Topic
|
[- ] Sub Topic02
|
[+] Link

Sub menu must show when click on the [+] mark & Menu must hide when click on [-] mark
Please help me by giving HTML sample code for create menu like this.. Thanks