var urlAddress = "http://www.yosemiteresorts.us/";

var pageName = "Yosemite Resorts Website";

 

function addToFavorites()

{

            if (window.external)

            {

                         window.external.AddFavorite(urlAddress,pageName);

            }

            else

            { 

                         alert("Sorry! Your browser doesn't support this function.");

            }

}