$(document).ready(function(){
  h = $('#mainimage > img').attr( 'height' );
  d = new Date();
  m = ( d.getMonth() + 1 ).toString();
  if ( m.length == 1 )
    m = "0" + m;
  i = "mainimage_" + m + ".jpg";
  a = "木原税理士事務所";
  if ( h == 222 )
  {
    i = "top_" + i;
    a = "木原税理士事務所　やさしい税のお話";
  }
  i = "images/mainimage/" + i;
  s = $('#mainimage > img').attr( 'src' );
  if ( s.indexOf( '.' ) < 1 )
    i = "../" + i;
  $('#mainimage').html( '<img src="' + i + '" width="760" height="' + h + '" alt="' + a + '" />' );
  $('#mainimage').css( { 'textIndent': 0 } );
});