var userCookieName = "GizmozLoginUserCookie";
var passCookieName = "GizmozLoginPassCookie";
var registerKeyCookieName = "GizmozRegisterKey";

// called later before the end of the html
function updateUserNameWithCookie()
{
    if (document.cookie != '')
        if (document.loginForm.username.value  == "") {
            document.loginForm.username.value = getCookie(userCookieName);
        }
}

// set username and password
function setLoginCookies(username) {
    createCookie(userCookieName, username, 0);
}

// set username and password
function eraseLoginCookies() {
    eraseCookie(userCookieName);
}

function getCookie (name)
{
	var thisCookie = document.cookie
	//alert("thisCookie=" + thisCookie);
	name += "=";
	var i = 0; 	// index of first name=value pair
	while (i < thisCookie.length) {
		var search = i + name.length; 	
		if (thisCookie.substring(i, search) == name) { 	
			var sEnd = thisCookie.indexOf(";", search); 	
			if (sEnd == -1) sEnd = thisCookie.length;
				return unescape(thisCookie.substring(search, sEnd));
		}
            i = thisCookie.indexOf(" ", i) + 1;  // move i to next name=value pair
            if (i == 0) break; 	// no more values in cookie string
	}
	return ""; 	// cookie not found
}

function createCookie(name, value, days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days*24*60*60*1000));
        var expires = "; expires=" + date.toGMTString();
    }
    else var expires = "";
    document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name) {
    var nameEQ = name + "=";
    var cookieList = document.cookie.split(';');
    for (var i=0; i < cookieList.length; i++) {
        var curr = cookieList[i];
        while (curr.charAt(0) == ' ') curr = curr.substring(1, curr.length);
        if (curr.indexOf(nameEQ) == 0) return curr.substring(nameEQ.length, curr.length);
    }
    return null;
}

function eraseCookie(name) {
    createCookie(name, "", -1);
}