// 자바스크립트
function mem_Insert(){

	if (!mem_join.u_name.value){ alert('The Username field is empty. Please enter Username.');  mem_join.u_name.focus(); return false; }
	if (!mem_join.u_email.value){ alert('The E-mail address field is empty. Please enter E-mail address.'); mem_join.u_email.focus();return false; }

	if (!checkEmail(mem_join.u_email.value)){ alert('Input correctly E-mail address!!'); mem_join.u_email.focus(); return false; }

	if (!mem_join.u_pass.value){ alert('The password field is empty. Please enter password.');	mem_join.u_pass.focus();	return false; }
	if (!mem_join.re_pass.value){	alert('Retype password field is empty. Please reenter your password.');	mem_join.re_pass.focus();	return false; }

	if (mem_join.u_pass.value != mem_join.re_pass.value){
		alert('Please enter the same password in both password fields.');
		mem_join.u_pass.value = '';
		mem_join.re_pass.value = '';
		mem_join.u_pass.focus();
		return false;
	}
}

function mem_Login(){
	if (!mem_login.u_email.value){ alert('The E-mail address field is empty. Please enter E-mail address.'); mem_login.u_email.focus();return false; }
	if (!mem_login.u_pass.value){ alert('The Password field is empty. Please enter Password.');  mem_login.u_pass.focus(); return false; }
}


function mem_Update(){

	if (!mem_update.u_name.value){ alert('The Username field is empty. Please enter Username.');  mem_update.u_name.focus(); return false; }
	if (!mem_update.u_email.value){ alert('The E-mail address field is empty. Please enter E-mail address.'); mem_update.u_email.focus();return false; }

	if (!checkEmail(mem_update.u_email.value)){ alert('Input correctly E-mail address!!'); mem_update.u_email.focus(); return false; }

	if (!mem_update.u_pass.value){ alert('The password field is empty. Please enter password.');	mem_update.u_pass.focus();	return false; }
	if (!mem_update.re_pass.value){	alert('Retype password field is empty. Please reenter your password.');	mem_update.re_pass.focus();	return false; }

	if (mem_update.u_pass.value != mem_update.re_pass.value){
		alert('Please enter the same password in both password fields.');
		mem_update.u_pass.value = '';
		mem_update.re_pass.value = '';
		mem_update.u_pass.focus();
		return false;
	}
}