function checkform(){
	if (document.getElementById("realname").value == ""){
		// something is wrong
		alert("Please enter a \"First & Last Name\"");
		return false;
	}
	else if (document.getElementById("email").value == ""){
		alert("Please enter an \"Email\" Address");
		return false;
	}
	else if (document.getElementById("zip_code").value == ""){
		alert("Please enter a \"Zip Code\". If you do not have a US zip code, please enter the name of your country here.");
		return false;
	}
	else if (document.getElementById("contact_phone").value == ""){
		alert("Please enter a \"Contact Phone\" where you can be reached.");
		return false;
	}
	
	// If the script gets this far through all of your fields
	// without problems, it's ok and you can submit the form
	return true;
}