function checkform(form){
  var emailreg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
  var phonereg = /^([0-9_\-\(\)\.]{7,12})$/;
  var name = form.nme.value;
  var phone = form.phn.value;
  var email = form.eme.value;
  
  if(name == '' || phone == '' || email == ''){
    alert('Kindly fill-up all the fields!!!');
    return false;
  }else if(phonereg.test(phone) == false) {
    alert('Please check your phone number!!!');
    return false;
  }else if(email != 'N/A' && emailreg.test(email) == false) {
    alert('Please check your email!!!');
    return false;
  }else{
    document.form.submit();
    return true;
  }
}

function checkformside(form){
  var emailreg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
  var phonereg = /^([0-9_\-\(\)\.]{7,12})$/;
  var name = form.nm.value;
  var phone = form.ph.value;
  var email = form.em.value;
  
  if(name == '' || phone == '' || email == ''){
    alert('Kindly fill-up all the fields!!!');
    return false;
  }else if(phonereg.test(phone) == false) {
    alert('Please check your phone number!!!');
    return false;
  }else if(email != 'N/A' && emailreg.test(email) == false) {
    alert('Please check your email!!!');
    return false;
  }else{
    document.form.submit();
    return true;
  }
}