// JavaScript Document
function changeDisplay(objectID){
	var obj = window.document.getElementById(objectID);
	if(obj.style.display == "block"){
		obj.style.display = "none";	
	}else{
		obj.style.display = "block";	
	}
}
function isValidEmail(email){
	var sEmail = email;
	var expEmail = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/;
	var sMessage = "The following are required:\n";
	var isValidEmail = 1;
	if(sEmail.length == 0){
		isValidEmail = 0;
		sMessage = sMessage+="An email address\n";
	}else{
		isValidEmail = expEmail.test(sEmail);
		if(! isValidEmail){
			isValidEmail = 0;
			sMessage = sMessage+="A valid email address\n";
		}
	}
	if(isValidEmail == 0){
		alert(sMessage);
	}
}