function TafGetInputField(theform, theid) {

    thestr = "document.getElementById('" + theform + "')." + theid + ".value";
    val    = eval(thestr);
    return val;
}

function TafOpen() {
 window.open('http://www.mhc.se/software/plugins/tellafriend.html', 'tafwindow', 
  config='height=420,width=250, toolbar=no, menubar=no,scrollbars=no, resizable=no,location=no, directories=no, status=no')
}

function TafSubmit() {

    fName  = TafGetInputField("TafForm", "friendsName");
    fEmail = TafGetInputField("TafForm", "friendsEmail");
    yName  = TafGetInputField("TafForm", "yourName");
    yEmail = TafGetInputField("TafForm", "yourEmail");
    ySubN  = document.TafForm.subNewsletter.checked;

    theArgs = "fn=" + fName + "&fe=" + fEmail + "&yn=" + yName + "&ye=" + yEmail + "&ys=" + ySubN;
    window.location.href = "http://www.mhc.se/software/plugins/TafEmail.php?" + theArgs; 
}