var On = 0;
var iAskHowOften = 10;
var sAskedCookie = "iop-askedbefore1";
var iCookieLifeMonths = 6;
    
var sGotoURL = "http://store.adidaslistens.com/surveyinviteperf.html"
    
if( On ) {

    function SetCookie(sName, sValue, cookExpire) {
        document.cookie = sName + "=" + escape(sValue) + ";path=/; expires=" + cookExpire + ";";
    }

    function isCookieSet(sName) {
        return document.cookie.indexOf(sName) != -1;
    }
	
    var date = new Date();
    date.setMonth(date.getMonth()+iCookieLifeMonths);
    var cookExpire = date.toGMTString();
    var sTestCookie = "iop-cookiesenabled";

    SetCookie(sTestCookie,1,cookExpire);

    // if test cookie isn't set, fall out
    if( isCookieSet(sTestCookie) ) {
        var rndN;
        rndN = Math.floor(iAskHowOften*Math.random());
        //alert("here:"+isCookieSet(sAskedCookie)+" rnd:"+rndN);
        if( !isCookieSet(sAskedCookie) &&
            rndN==0 ) { // if cookie has not been set and iAskHowOften-th
            SetCookie(sAskedCookie, 1, cookExpire);
            // timeout used to insure Firefox (at least) keeps this page
            // in history buffer to go back to.
            setTimeout("top.location=sGotoURL;",1);
        }
    }
}