Get URL Parameters Using Javascript

function getUrlParameters(parameter, staticURL, decode){
   var currLocation = (staticURL.length)? staticURL : window.location.search,
       parArr = currLocation.split("?")[1].split("&"),
       returnBool = true;
   
   for(var i = 0; i < parArr.length; i++){
        parr = parArr[i].split("=");
        if(parr[0] == parameter){
            return (decode) ? decodeURIComponent(parr[1]) : parr[1];
            returnBool = true;
        }else{
            returnBool = false;            
        }
   }
   
   if(!returnBool) return false;  
}