The site alert banner appears at the top of our website pages when we need to alert users to important information. It may cover the entire site, or a section of it.
To implement this we've used a session cookie that is written when the newsflash is closed. This cookie cannot have a unique name, as there may be more than one newsflash displaying on the website at any particular time.
The cookie name will always be in the format 'siteAlertXXX', where the XXX will be a number based on the page the newsflash is recorded against e.g. siteAlert1865. The number will be different for each newsflash on the website.