function getCookie(name) {//not mine
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    } else {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}
function blockLogin(message) {
	document.cookie="testcookie=check";
	if (getCookie("testcookie")) return true;
	else {	
		alert(message);
		return false;
	}
}
function checkCookie(message) {
	document.cookie="testcookie=check";
	if (!getCookie("testcookie")) alert(message);
	return true;
}	

function login() {

	var name = document.getElementById("username").value;
	var p = document.getElementById("loginval");
	var pass = p.value;
	if (name.length == 0 || pass.length==0) {
		alert("Please enter both user name and password");
		return false;
	}
//	p.value = md5(pass);
	return true;
}



function deleteCookie(name) {
    if (getCookie(name)) {
        document.cookie = name + "=; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}
function getCookie(name) {//not mine
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    } else {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}