プログラム変更

<a expr:name='data:post.id'/>
<b:if cond='data:post.title'>
<h2>
  <b:if cond='data:post.link'>
   <img src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBUSCrKn8rIVkrqpcb7Xmv6wuFk500-GJ3XE0DlKAV0vnm14WlhhaixOfKV7g103mCa9WVcUN3Qa5sGCpy5_EoL9pp2khSptaFZ8F7RaITsUq0aZXhdJhoTl3k634Bg9lKMTVtEDIxdb60/s400/previous.png'/> <a expr:href='data:post.link'> <data:post.title/></a>
  <b:else/>
   <b:if cond='data:post.url'>
    <img src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBUSCrKn8rIVkrqpcb7Xmv6wuFk500-GJ3XE0DlKAV0vnm14WlhhaixOfKV7g103mCa9WVcUN3Qa5sGCpy5_EoL9pp2khSptaFZ8F7RaITsUq0aZXhdJhoTl3k634Bg9lKMTVtEDIxdb60/s400/previous.png'/> <a expr:href='data:post.url'> <data:post.title/></a>
   <b:else/>
    <img src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBUSCrKn8rIVkrqpcb7Xmv6wuFk500-GJ3XE0DlKAV0vnm14WlhhaixOfKV7g103mCa9WVcUN3Qa5sGCpy5_EoL9pp2khSptaFZ8F7RaITsUq0aZXhdJhoTl3k634Bg9lKMTVtEDIxdb60/s400/previous.png'/> <data:post.title/>
   </b:if>
  </b:if>
</h2>
</b:if>>