Quick Exhaust Valve

function ShowComments(id) { var obj = document.getElementById(id); if (obj.style.display == "none") obj.style.display = "block"; else obj.style.display = "none"; } function check() { var obj = document.cmtform; if (obj.name.value == "") { alert("请填写联系人"); obj.name.focus(); return false; } if (obj.memo.value == "") { alert("请填写评论内容"); obj.memo.focus(); return false; } return true; } </SCRIPT>