function addtofav()
{
 var urlAddress = "http://www.earthtechproducts.com";
 var pageName = "Earthtechproducts.com";
  if (window.external)
  {
   window.external.AddFavorite(urlAddress,pageName)
  }
  else
  { 
   alert("Sorry! Your browser doesn't support this function.");
  }
 }