Simple string check to see which version of storyline is running - either flash or html5 only works if teh default html file names are used. * marked for futher dev to make comprehensive.
function storylineTypeCheck(){
var pathname = window.location.pathname;
var strID = pathname.substr(pathname.length - 6, pathname.length).split(".")[0];
if (strID === "5") {
return "html5";
}else{
return "swf";
}
}