var isShift=false;
function isNumeric(keyCode)
{
      if(keyCode==16)
            isShift = true;
      return ((keyCode >= 48 && keyCode <= 57 || keyCode == 8 ||
            (keyCode >= 96 && keyCode <= 105)) && isShift == false);
}

function keyUP(keyCode)
{
      if(keyCode==16)
            isShift = false;
}