{loop archive($_catid,$_typeid,$_spid,$_area,$_length,$_ordertype,$_limit,$_image,$_attr1,$_son,$_wheretype,$_tpl,$_intro_len,$_istop) $i $archive}
{if $i%2==0} {$archive['stitle']} {/if}

{$archive['title']}

{$archive[intro]}

{if $i%2==1} {$archive['stitle']} {/if}
{/loop}