function checkRadioButton(obj) {
	var error = false;
	
	for (i = 0; i < obj.length; i++) {
		if (obj[i].checked == true) {
			error = false;
			break;
		} else {
			error = true;
		}
	}
	if (error == true) {
		return false;
	}
	
	return true;
}

function checkOnSubmit(obj) {
	if (checkRadioButton(obj.investor) == false) {
		alert('Please select your type of investor');
		obj.investor[0].focus();
		return false;
	}

	if (obj.fname.value == '') {
		alert('Please enter your first name');
		obj.fname.focus();
		return false;
	}
	
	if (obj.lname.value == '') {
		alert('Please enter your last name');
		obj.lname.focus();
		return false;
	}
	
	if (obj.email.value == '') {
		alert('Please enter your e-mail address');
		obj.email.focus();
		return false;
	}
	
	if (obj.phone.value == '') {
		alert('Please enter your phone number');
		obj.phone.focus();
		return false;
	}
		
	if (obj.country.value == '') {
		alert('Please enter the country');
		obj.country.focus();
		return false;
	}
	
	if (obj.city.value == '') {
		alert('Please enter the city name');
		obj.city.focus();
		return false;
	}
	
	if (obj.postal.value == '') {
		alert('Please enter your postal address');
		obj.postal.focus();
		return false;
	}

	if (checkRadioButton(obj.purpose) == false) {
		alert('Please select the options you\'d like to trade with');
		obj.purpose[0].focus();
		return false;
	}

	if (checkRadioButton(obj.connection) == false) {
		alert('Please select the options you\'d like to trade through');
		obj.connection[0].focus();
		return false;
	}

	return true;
}