function parse_str(url) {
  var qs = url.split('?').pop().split('&');
  var qso = {} 
  for(var i=0;i<qs.length;i++){
    if(qs[i]=="") continue;
    var tmpa = qs[i].split("=");
    qso[tmpa[0]] = tmpa[1]?tmpa[1]:"";
  }
  return qso;
}

param = parse_str('www.test.com/test.html?teststr1=dddsdss&teststr2=ffsss');