function validateForm() {
	// Global variables for shorthand use
	var name = document.email_form.name.value;
	var email = document.email_form.email.value;
	var subject = document.email_form.subject.value;
	var message = document.email_form.message.value;
	
	if(name == "") {
		alert("Please enter your name");
		document.email_form.name.focus();
		return(false);
	}
	
	else if(email.indexOf("@") < 1) {
		alert("Please enter a valid email address");
		document.email_form.email.focus();
		return(false);
	}
	
	else if(subject == "") {
		alert("Please let us know what this message is about");
		document.email_form.subject.focus();
		return(false);
	}
	
	else if(message == "") {
		alert("Please write us a message");
		document.email_form.message.focus();
		return(false);
	}
	
	else {
		return(true);
	}
}