var chr = 'CTRL-D';
var agt=navigator.userAgent.toLowerCase();

if(agt.indexOf("opera") != -1) chr = 'CTRL-T';

if (window.external)
{
  document.write('<a href="javascript:window.external.AddFavorite(self.location,document.title)"><img src="/images/favorites.gif" hspace="3" border=0 align="absmiddle">Add to Favorites</a>');
}
else
{
  document.write('Press '+chr+' to bookmark this page.');
}