function ltrim (s)
{
    return s.replace( /^\s*/, "" );
}

function rtrim (s)
{
    return s.replace( /\s*$/, "" );
}

function trim (s)
{
    return rtrim(ltrim(s));
}

function validEmail (email)
{
    //var filter = "^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[\\w]$"
    var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
    if (!filter.test(email)) {
        return false;
    }

    return true;
}

function setCopyright()
{
    var d = new Date();
    var y = d.getFullYear();
    $("#copyright span").html(y);
    return;
}

function checkRequirements(id)
{
    $.cookie("testcookie","testcookievalue");
    if ( $.cookie("testcookie") == "testcookievalue"  ) {
        $("#"+id).css("display","none");
    }
}