var agent = navigator.userAgent.toLowerCase()
var is_ns  = ((agent.indexOf('mozilla') != -1) && (agent.indexOf('spoofer') == -1) && (agent.indexOf('compatible') == -1)
                && (agent.indexOf('opera') == -1) && (agent.indexOf('webtv') == -1) && (agent.indexOf('hotjava') == -1))
var is_ie = ((agent.indexOf("msie") != -1) && (agent.indexOf("opera") == -1))
var is_opera = (agent.indexOf("opera") != -1);
var is_gecko = (agent.indexOf('gecko') != -1);

survey_voted = false

function CheckSurveyFormData(_fObj) { 
    AID = (_fObj.AID != null)?_fObj.AID:""
    AMixed = (_fObj.AMixed != null)?_fObj.AMixed.value:""

    selected = false
    if (AMixed != "") {
        selected = true
    }else{
        for (i=0;i<AID.length;i++) {
            if (AID[i].checked == true) {
                selected = true
                break
            }
        }
    }
    if (!survey_voted && selected) {
        //showit(498,490,'surveyThanks')
        survey_voted = true
    	return true;
    }else{
		return false;
    }
}

function FixSurveyFormData(_fEl) {
    _fObj = document.surveyForm
    AID = (_fObj.AID != null)?_fObj.AID:""
    AMixed = (_fObj.AMixed != null)?_fObj.AMixed.value:""

    if (_fEl.name == "AID" && AMixed != "")
        _fObj.AMixed.value = ""
    else if (_fEl.name == "AMixed" && AID != "") {
        for (i=0;i<AID.length;i++) 
             AID[i].checked = false
		AID.checked = false
    }
}