A count of the years from 490 B.C. to A.D. 2011

Here is the javascript program to generate the year count at left:

yearCount = 0;
/* First, count the years from 490 B.C. to 1 B.C. */
for (yearBC=490; yearBC>0; yearBC--) {
  document.write ("September, " + yearBC + " BC:   " + yearCount);
  document.write ("\n");  /*line break*/
  yearCount++; /*increment count of years*/
  } 
/* Now count starting in A.D. 1 */
for (yearAD=1; yearAD<=2011; yearAD++) {
  document.write ("September, AD " + yearAD + ":   " + yearCount);
  document.write ("\n");
  yearCount++;
  }