http://blog.naver.com/amoong25/100022551396


//===================================
// Email Check Function
//===================================

function Chk_Email(type) {

var obj_email = document.form.email;
var struserid = document.form.userid;
var mailcheck = document.form.mailcheck;
var tail

if(mailcheck.checked){
tail = "@kma.or.kr";
if(struserid.value != ""){
obj_email.value = struserid.value + tail;
}else{
alert('아이디를 입력해주세요');
struserid.focus();
mailcheck.checked = false;
return false;
}
}
else{
obj_email.value = "";
}
return true;
}<div class='small'>[이 게시물은 관리자님에 의해 2011-10-31 17:16:08 PHP & HTML에서 이동 됨]</div>