//On normal site and need go mobile
if ((screen.width<=screenwidth) && (location.host=="www.unifo.co.uk"))
{
document.write("<p>You are advised to click <a href='");
document.write("http://www.m.unifo.co.uk"+location.pathname);
document.write("' title='Visit the mobile version of this page'>here</a> to view an optimised version of this page for your mobile device.</p>");
}

//On mobile site and need to go normal
if ((screen.width>=screenwidth) && (location.host=="www.m.unifo.co.uk"))
{
document.write("You are currently viewing an optimised version of this page designed for mobiles. <br />You are advised to click <a href='");
document.write("http://www.unifo.co.uk"+location.pathname);
document.write("' title='Visit the normal version of this page'>here</a> to view the normal version.");
}