function validateForm(form) {
	if (form.first_name.value == "") {
		alert("Please enter your first name.");
		form.first_name.focus();
		return false;
	}
	if (form.last_name.value == "") {
		alert("Please enter your last name.");
		form.last_name.focus();
		return false;
	}
	if (form.email_address.value == "") {
		alert("Please enter your email address.");
		form.email_address.focus();
		return false;
	}
	if (!checkEmail(form.email_address.value)) {
		alert("Please enter a valid email address.");
		form.email_address.focus();
		return false;
	}
	if (form.product_name.value == "") {
		alert("Please select your product name.");
		form.product_name.focus();
		return false;
	}
	if (form.problem_description.value == "") {
		alert("Please enter the problem description.");
		form.problem_description.focus();
		return false;
	}
	document.getElementById('uploading_note').style.display = 'block';
}