function emailcheck() {
	var form = document.form_1;
	var emailEx1 = /^([A-Za-z0-9_-]{1,25})(@{1})([A-Za-z0-9_]{1,20})(.{1})([A-Za-z0-9_]{2,10})(.{1}[A-Za-z]{2,10})?(.{1}[A-Za-z]{2,10})?$/; 
	var email = form.Fomail;

	if(form.Foname.value=="") {
		alert("À̸§À» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
		form.Foname.focus();
		return false
	}

	if(emailEx1.test(email.value)) {
	} else {
		alert('¸ÞÀÏ ÁÖ¼Ò°¡ ¿Ã¹Ù¸£Áö ¾Ê½À´Ï´Ù.');
		email.value ="";
		email.focus();
		return false;
	} 

	if(form.Sumail.value=="") {
		alert("Á¦¸ñÀ» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
		form.Sumail.focus();
		return false
	}

	if(form.Comail.value=="") {
		alert("³»¿ëÀ» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
		form.Comail.focus();
		return false
	}
}