var currentTime = new Date();
var seasonYear = currentTime.getFullYear();
var theEmailAddress  = "capttom@clearwire.net";

var sailingYears = seasonYear - 1980;

var daYear = " " +  sailingYears ; 
var lengthYear =  daYear.length;
            
var lastPos  =  daYear.substring(lengthYear-1);

var theSuffix = "th";
      if ( lastPos == "1") theSuffix = "st";
      if ( lastPos == "2") theSuffix = "nd";
      if ( lastPos == "3") theSuffix = "rd";

function doEmail()
{
     location.href = "mailto:" + theEmailAddress;
}