function CheckYear()
{
  yearval = document.bhira.year.value;

  if (yearval < 100)
  {
      bhira.year.value=100
  
  }

  if (yearval > 4358)
  {
       bhira.year.value=4358
  }

  document.bhira.submit()
}





function Next_Year()
{bhira.year.value= bhira.year.value*1+1;
 javascript:CheckYear()

}

function Prev_year()
{bhira.year.value= bhira.year.value-1;
 javascript:CheckYear()
}


function Next_Year10()
{bhira.year.value= bhira.year.value*1+10;
 javascript:CheckYear()

}

function Prev_year10()
{bhira.year.value= bhira.year.value-10;
 javascript:CheckYear()
}