Get Only Select Current URL Params

getSelectParams.js

function getSelectParams(){
  var selectParamsArr = [];
  var paramsArr = window.location.search.replace('?','').split('&');
  for(var i=0,len=paramsArr.length;i<len;i++){
    if(/cgid=|cid=|sid=/.test(paramsArr[i]) ){
      selectParamsArr.push(paramsArr[i]);
    }
  }
  return selectParamsArr.join('&');
}