function extandDiv(div){
	if(document.getElementById(div).style.display=="none")
		document.getElementById(div).style.display="block"
	else
		document.getElementById(div).style.display="none"
}

function validate_required(field,alerttxt){
	with(field){
		if(value==null || value==""){
			alert(alerttxt)
			return false;
		}
		else {
			return true
		}
	}
}
function validate_email(field, alerttxt){
	with(field){
		apos=value.indexOf("@")
		dotpos=value.lastIndexOf(".")
		if(apos<1 ||dotpos<2){
			alert(alerttxt)
			return false
		}
		else {
			return true
		}
	}
}

function validateLogin() {
	var username = document.doctorLogin.username;
	if(validate_required(username,"Username is Required!")==false){
		email.focus();
		return false;
	}
	var password = document.doctorLogin.password;
	if(validate_required(password,"Password is Required!")==false){
		email.focus();
		return false;
	}
	document.doctorLogin.submit();
}

function validateNewsletter() {
	var name = document.register.name;
	if(validate_required(name,"Name is Required!")==false){
		email.focus();
		return false;
	}
	var email = document.register.email;
	if(validate_email(email,"Not a valid e-mail address!")==false){
		email.focus();
		return false;
	}
	document.register.submit();
}