Blog Pager

<b:includable id='nextprev'>
<div class='blog-pager' id='blog-pager'>
<b:if cond='data:newerPageUrl'>
<span id='blog-pager-newer-link'>
<a class='blog-pager-newer-link' expr:href='data:newerPageUrl' expr:id='data:widget.instanceId + "_blog-pager-newer-link"' expr:title='data:newerPageTitle'> <img alt='data:newerPageTitle' src='http://bp0.blogger.com/_Zuzii37VUO4/Rf4lJS031KI/AAAAAAAAAfc/JItp8PeZF1U/s1600/botong_atras.gif' /></a>
</span>
</b:if>
<b:if cond='data:olderPageUrl'>
<span id='blog-pager-older-link'>
<a class='blog-pager-older-link' expr:href='data:olderPageUrl' expr:id='data:widget.instanceId + "_blog-pager-older-link"' expr:title='data:olderPageTitle'> <img alt='data:olderPageTitle' src='http://bp2.blogger.com/_Zuzii37VUO4/Rf4lEy031JI/AAAAAAAAAfU/iu3bL2eUbhM/s1600/botong_adelante.gif'/> </a>
</span>
</b:if>
<b:if cond='data:blog.homepageUrl != data:blog.url'>
<a class='home-link' expr:href='data:blog.homepageUrl'>
<img alt='data:homeMsg' src='http://bp1.blogger.com/_Zuzii37VUO4/Rf4lMi031LI/AAAAAAAAAfk/m7Qpa985MY0/s1600/botong_home.gif'/> </a>
<b:else/>
<b:if cond='data:newerPageUrl'>
<a class='home-link' expr:href='data:blog.homepageUrl'><data:homeMsg/></a>
</b:if>
</b:if>
</div>
<div class='clear'/>
</b:includable>

Read More:

http://blog.btemplates.com/customize-the-navigation-feet-to-older-or-newer-posts-on-blogger/