Refer a friend

try{if("URLSearchParams"in window){var mavtoken,params={},searchParams=new URLSearchParams(window.location.search);searchParams.has("id_ref")?(params.id_ref=searchParams.get("id_ref"),searchParams.has("mavtoken")&&(params.mavtoken=searchParams.get("mavtoken"))):"undefined"==typeof Storage||void 0!==(mavtoken=localStorage.GRmavtoken)&&""!=mavtoken&&null!=mavtoken&&"null"!=mavtoken&&"NULL"!=mavtoken&&(params.mavtoken=mavtoken);for(var app_url,elems=document.querySelectorAll("[data-grclass]"),sParams=new URLSearchParams(params),i=0;i<elems.length;i++)elems[i].id="ec_iframe_"+i,0<Object.keys(params).length&&(app_url=elems[i].src,app_url+=(-1==app_url.indexOf("?")?"?":"&")+sParams,elems[i].src=app_url),void 0!==elems[i].className&&""!=elems[i].className||(elems[i].className="gr_iframe_widget")}}catch(a){}