Anyone know where i can get a script, which detects someone's browser - if they aren't using Firefox, Safari or Latest IE then a pop up box comes with a message.

Anyone know a script that can do that?

Google

Chris i tried that before, i found some scripts but they weren't what i was looking for. Most of them are for older versions, i'm looking for something specific as mentioned in my post above.

The methods to get the information out of the browsers is the same as it always has been, and the information is in the same format. You have to decode the version string and/or the user agent string to achieve whatever results you need.

However, having said that, "nagging" users about their choice of browser, or the browser they have to use for whatever reason, is NOT the best way to endear you and your site to the visitor. The days of "Best viewed in Internet Exploder at 1024x768" are thankfully well and truly behind us (or should be)

Instead of detecting specific browsers, and there are loads :

useragent listing

it would be better to detect whether a visiting useragent supports your site's functionality. So instead of examining a particular useragent using something like navigator.userAgent or the HTTP_USER_AGENT server variable ( which can be spoofed anyway ) check whether a property is supported prior to using it and branch to alternative content as appropriate.

For example :

if(document.getElementById)
{
do this...
}
else
{
do this instead...
}

This way you don't need to keep revisiting your code everytime a new browser or browser version gets released.