function CheckForm(form) {
	EMAILre = /^[a-zA-Z0-9\.\-\_]+@[a-zA-Z0-9][a-zA-Z0-9-\.]*\.[a-zA-Z0-9]+$/;
	if (form.first_name.value.length < 3) { alert('Enter your first name'); form.first_name.focus(); return false; }
	if (form.last_name.value.length < 3) { alert('Enter your last name'); form.last_name.focus(); return false; }
	if (!EMAILre.test(form.email.value)){alert('Enter your e-mail'); form.email.select(); form.email.focus(); return false; }
	form.submit();
	return true;
}
function changeTotal(){
  var a = document.getElementById('chk1');
  var b = document.getElementById('total');
  if (a.checked == true) {
    b.innerHTML = '47,50 USD';
  } else {
    b.innerHTML = '35 USD';
  }
}
function tutorial(site,w,h){
	window.open('http://www.lottomania2000.net/quick-start/' + site ,'Tutorial','toolbar=no,status=no,scrollbars=yes,width=' + w + ',height=' + h);
}