<{assign var="year" value=$smarty.now|date_format:"%Y"}> <{assign var="mon" value=$smarty.now|date_format:"%m"}> <{assign var="n_year" value=$year}> <{assign var="n_mon" value=$mon}> <{math equation="$n_mon + 1" assign="n_mon"}> <{if $n_mon < 10}> <{assign var="n_mon" value="0"|cat:$n_mon}> <{/if}> <{if $n_mon > 12}> <{assign var="n_mon" value="01"}> <{math equation="$year + 1" assign="n_year"}> <{/if}> <{assign var="kongetsu" value=$year|cat:"_"|cat:$mon}> <{assign var="raigetsu" value=$n_year|cat:"_"|cat:$n_mon}>