var expDays = 30;
var exp = new Date(); 
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

function getCookieVal (offset) {  
	var endstr = document.cookie.indexOf (";", offset);  
	if (endstr == -1)    
		endstr = document.cookie.length;  
	return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {  
	var arg = name + "=";  
	var alen = arg.length;  
	var clen = document.cookie.length;  
	var i = 0;  
	while (i < clen) {    
		var j = i + alen;    
		if (document.cookie.substring(i, j) == arg)      
			return getCookieVal (j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) 
			break;   
	}  
	return null;
}

function SetCookie (name, value) {  
	var argv = SetCookie.arguments;  
	var argc = SetCookie.arguments.length;  
	var expires = (argc > 2) ? argv[2] : null;  
	var path = (argc > 3) ? argv[3] : null;  
	var domain = (argc > 4) ? argv[4] : null;  
	var secure = (argc > 5) ? argv[5] : false;  
	document.cookie = name + "=" + escape (value) + 
		((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
		((path == null) ? "" : ("; path=" + path)) +  
		((domain == null) ? "" : ("; domain=" + domain)) +    
		((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) {  
	var exp = new Date();  
	exp.setTime (exp.getTime() - 1);  
	var cval = GetCookie (name);  
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

function getFileName() {
	var location;
	var str;
	var strArray;
	var size;
	var fileName;
	
	//var tempurl;
	
	//Get url of current file
	location = parent.location;
	
	//Convert url to string
	str = new String(location);
	
	//Parse fileName from url string 
	strArray = str.split("/");
	size = strArray.length;
	fileName = strArray[size - 1];
	
	if (fileName.indexOf("?") > -1) {
		fileName = fileName.substring(fileName.indexOf("?") + 1, fileName.length);
		fileName = new String(fileName);
		return fileName;
	}
	else {
		return "index.html";
	}
}

function validateLogin() {
	//validate username and password
	
	var valid = false;
	var username = document.loginForm.username.value;
	var password = document.loginForm.password.value;
	var userArray = new Array("leader");
	var valPasswd = "letmein";

	DeleteCookie("login");
	
	for (i = 0; i < userArray.length; i++) {
		if (username == userArray[i]) {
			valid = true;
		}
	}
	if (valid == false) {
		alert("Username Invalid");
		return;
	}
	if (password != valPasswd) {
		valid = false;
		alert("Password Invalid");
		return;
	}
	if (valid == true) {
		SetCookie("login","valid"); 
		window.location.href = "members.htm";
	}
}