var external_href = "";
var new_win;
function externalLink(href)
{
    new_win = window.open('external_warning.html','',"width=500, height=300, toolbar=0");
    external_href = href;
    return false;
}

function continueToExternal()
{
    new_win.close();
    window.open(external_href,'');
}

function cancelExternal()
{
    new_win.close();
}