function indexValidate() {
	if (document.loginForm.user.value == "" || document.loginForm.pass.value == "") {
		if (document.loginForm.user.value == "") {
			alert("Please enter your Username and try again.");
			document.loginForm.user.focus();
			return false;
		} else if (document.loginForm.pass.value == "") {
			alert("Please enter your Password and try again.");
			document.loginForm.pass.focus();
			return false;
		}
	} else {
		return true;
	}
}

function adduserValidate() {
	// Check for empty values in required fields first
	if (document.getElementById("user").value == "" || document.getElementById("pass").value == "" || document.getElementById("pass2").value == "") {
		alert("Please enter all required values.");
		if (document.getElementById("user").value == "") {
			document.getElementById("user").focus();
			return false;
		}
		if (document.getElementById("pass").value == "") {
			document.getElementById("pass").focus();
			return false;
		}
		if (document.getElementById("pass2").value == "") {
			document.getElementById("pass2").focus();
			return false;
		}
	}
	// Check that passwords are the same
	if (document.getElementById("pass").value != document.getElementById("pass2").value) {
		alert("Passwords did not match. Please try again.");
		document.getElementById("pass").value = "";
		document.getElementById("pass2").value = "";
		document.getElementById("pass").focus();
		return false;
	}
	// Check the day, month and year fields if there's a value in one of them
	if (document.getElementById("day").value || document.getElementById("month").value || document.getElementById("year").value) {
		// Check day
		if (document.getElementById("day").value == "" || (document.getElementById("day").value > 31) || (document.getElementById("day").value < 1)) {
			alert("Please enter a valid day.");
			document.getElementById("day").value = "";
			document.getElementById("day").focus();
			return false;
		}
		// Check month
		if (document.getElementById("month").value == "" || (document.getElementById("month").value > 12) || (document.getElementById("month").value < 1)) {
			alert("Please enter a valid month.");
			document.getElementById("month").value = "";
			document.getElementById("month").focus();
			return false;
		}
		// Check year
		if (document.getElementById("year").value == "" || (document.getElementById("year").value < 1) || (document.getElementById("year").value.length < 4)) {
			alert("Please enter a valid year.");
			document.getElementById("year").value = "";
			document.getElementById("year").focus();
			return false;
		}
	}
	// Check email address
	if (document.getElementById("email").value) {
		if (document.getElementById("email").value.indexOf("@") == -1 || document.getElementById("email").value.indexOf(".") == -1) {
			alert("If entering an email address, please make sure it is valid.");
			document.getElementById("email").focus();
			return false;
		}
	}
	return true;
}

function modifyValidate() {
	// Check that passwords are the same
	if (document.getElementById("pass").value != document.getElementById("pass2").value) {
		alert("Passwords did not match. Please try again.");
		document.getElementById("pass").value = "";
		document.getElementById("pass2").value = "";
		document.getElementById("pass").focus();
		return false;
	}
	// Check that the permission setting is a number
	if(document.getElementById("perm").value > 2 || document.getElementById("perm").value == ""){
		alert("Please enter only 0, 1 or 2 in the permission field.");
		document.getElementById("perm").value = "0";
		document.getElementById("perm").focus();
		return false;
	}
	// Check the day, month and year fields if there's a value in one of them
	if (document.getElementById("day").value || document.getElementById("month").value || document.getElementById("year").value) {
		// Check day
		if (document.getElementById("day").value == "" || (document.getElementById("day").value > 31) || (document.getElementById("day").value < 1)) {
			alert("Please enter a valid day.");
			document.getElementById("day").value = "";
			document.getElementById("day").focus();
			return false;
		}
		// Check month
		if (document.getElementById("month").value == "" || (document.getElementById("month").value > 12) || (document.getElementById("month").value < 1)) {
			alert("Please enter a valid month.");
			document.getElementById("month").value = "";
			document.getElementById("month").focus();
			return false;
		}
		// Check year
		if (document.getElementById("year").value == "" || (document.getElementById("year").value < 1) || (document.getElementById("year").value.length < 4)) {
			alert("Please enter a valid year.");
			document.getElementById("year").value = "";
			document.getElementById("year").focus();
			return false;
		}
	}		
	// Check email address
	if (document.getElementById("email").value) {
		if (document.getElementById("email").value.indexOf("@") == -1 || document.getElementById("email").value.indexOf(".") == -1) {
			alert("If entering an email address, please make sure it is valid.");
			document.getElementById("email").focus();
			return false;
		}
	}
	return true;
}