If you go this page http://www.sheffieldweather.co.uk/Live%20Weather.htm

and let it load

then go to the navigation bar at the top and sometimes the whole bar lights up and you're redirected too http://www.xara.com/uk/products/webdesigner

Looking at the page source the culprit is <a href="http://www.xara.com/link/" onclick="return(xr_nn());">


How did it get there ???