function PopupSurvey() {
    if(Math.random()>=0.1)
        return;
    if(document.cookie.indexOf("surveyed=1")!=-1)
        return;
    document.cookie="surveyed=1";
    window.open('http://vista-survey.com/survey/v2/survey2.dsb?ID=2781950804&closeonexit', '', 'width=680, height=450, toolbar=0, location=0, directories=0, status=0, menuBar=0, scrollBars=1, resizable=1');
}

function DisableSurvey() {
	survey_enabled = 0;
}

var survey_enabled = 1;
window.onunload=PopupSurvey;