function validation(form) {
      
      
if(form.first_name.value == '') {

alert('이름을 입력해주십시오');
form.first_name.focus();
return false;
}


if(form.last_name.value == '') {

alert('성을 입력해주십시오');
form.last_name.focus();
return false;
}

if(form.email.value == '') {

alert('이메일을 입력해주십시오');
form.email.focus();
return false;
}


if(form.street.value == '') {

alert('주소를 입력해주십시오');
form.street.focus();
return false;
}

if(form.city.value == '') {

alert('도시명을 입력해주십시오');
form.city.focus();
return false;
}

if(form.country.value == '') {

alert('국적을 입력해주십시오');
form.country.focus();
return false;
}

return true;
} 


function mearge(){
   document.getElementById('company').value =document.getElementById('first_name').value + "  " +document.getElementById('last_name').value ;
}