function goTo(url,openWin) 
{
    var changeURL = url
    var newWin = openWin
    if (changeURL == "") {
        alert("Please select a Topic from the select list.")
        return false
    }
    if (newWin == "") {
       //a null was placed in 2nd var
       window.open(url, 'newWindow');
    } else {
       //nothing in 2nd var
       document.location.href = url
    }
}