Function to extract query string from address bar and return them as Javascript array. Usage: var qs = getQueryString(); var value = qs["key"];

querystring.js

function getQueryString() {
       var qsDict = {};
       var qs = location.search.substr(1).split("&");

       function decode(s) { return decodeURIComponent(s.replace(/\+/g, " ")); };

       for (var i = 0; i < qs.length; i += 1) {
              var qKV = qs[i].split('=');
              if (qKV.length > 1) {
                     qsDict[decode(qKV[0])] = decode(qKV[1]);
              }
       } 

       return qsDict;
}