var txt = "Add to favourites";
var url = "http://www.chertseytoolhire.co.uk";
var who = "Chertsey Tool Hire.  For all you plant and tool hire needs.";

var ver = navigator.appName;
var num = parseInt(navigator.appVersion);
if ((ver == "Microsoft Internet Explorer")&&(num >= 4)) {
document.write('<a href="javascript:window.external.AddFavorite(url,who);" ');
document.write('onMouseOver=" window.status=');
document.write("txt; return true ");
document.write('"onMouseOut=" window.status=');
document.write("' '; return true ");
document.write('">'+ txt + '</a>');
}else{
txt += "  (Ctrl+D)";
document.write(txt);
}