function m1() { location.href = "/bbs/content.php?co_id=service"; }
function m1s1() { location.href = "/bbs/content.php?co_id=service"; }
function m1s2() { location.href = "/bbs/content.php?co_id=service2"; }
function m1s3() { location.href = "/bbs/content.php?co_id=service3"; }

function m2() { location.href = "/bbs/board.php?bo_table=insights"; }
function m2s1() { location.href = "/bbs/board.php?bo_table=insights"; }

function m3() { location.href = "/bbs/content.php?co_id=careers"; }
function m3s1() { location.href = "/bbs/content.php?co_id=careers"; }

function m4() { location.href = "/bbs/content.php?co_id=contactus"; }
function m4s1() { location.href = "/bbs/content.php?co_id=contactus"; }
function m4s2() { location.href = "/bbs/content.php?co_id=contactus2"; }
function m4s3() { location.href = "/bbs/write.php?bo_table=qna"; }