function isEmail(s)
{
    if (s.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
        return true;
    else
        return false;
}


function readCookie(name)
{
    var cookieValue = "";
    var search = name + "=";

    if(document.cookie.length > 0)
    { 
        offset = document.cookie.indexOf(search);
        if (offset != -1)
        { 
            offset += search.length;
            end = document.cookie.indexOf(";", offset);
            if (end == -1) end = document.cookie.length;
            cookieValue = unescape(document.cookie.substring(offset, end))
        }
    }
    return cookieValue;
}