function check_login(){
if(document.loginform.login_user.value == ''){
alert('Please enter Member ID.');
document.getElementById('loginform').login_user.focus();
return false;
}
if(document.loginform.logn_pass.value == ''){
alert('Please enter Password');
return false;
}
return true;
}
function err4(){   
if(document.form14.mailadd.value==''){
	  alert("Error Of E-mail Address.");
	  	  document.form14.mailadd.focus();
	  return false;
	  }        
   if(document.form14.mailadd.value!=""){
	  var filter=/^\s*([a-za-z0-9_-]+(\.\w+)*@(\w+\.)+\w{2,3})\s*$/; 
	  if(!filter.test(document.form14.mailadd.value)){
	  alert("Error Of E-mail Address.");
	  	  document.form14.mailadd.focus();
	  return false;
	  }
	  }
	  return true;
}// JavaScript Document