While posting Autoit scripts please surround them with Code style to improve readability and add syntax highlighting.
To add Autoit Code style select the code inside the editor and click on 'Code' button above the editor. It will add opening and closing tags around selected text: [code] [/code]. Then replace opening tag with [code=autoit].
Snippents written on many other programming languages can be highlighed the same way. By default Code highlighter is set to TeraTerm macro, i.e. [code] is the same as [code=ttl]