function sendMailPopup(urlToSend)
{
    var popup = window.open("email_page.php?URLref="+urlToSend, "popup", "height=480,width=500,status=1,toolbar=0,location=0,menubar=0,directories=0,resizable=1,scrollbars=1");
}

function externalLinks() 
{
    if (!document.getElementsByTagName) return;
    var anchors = document.getElementsByTagName("a");
    for (var i=0; i<anchors.length; i++) 
    {
        var anchor = anchors[i];
        if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
            anchor.target = "_blank";
    }
}
window.onload = externalLinks;