string prototype to get all query values from a URL string or alternatively search for a specific value. pieced together from various things i found on the googles.

get_parameters.js

String.prototype.getParameters = function(key){
  	var urlParams,
		match,
		pl     = /\+/g,  // Regex for replacing addition symbol with a space
		search = /([^&=]+)=?([^&]*)/g,
		decode = function (s) { return decodeURIComponent(s.replace(pl, ' ')); },
		query  = this;

	// this is hasty and fragile currently
	if (query.indexOf('?') !== -1) {
		query = query.split('?').slice(1).join('?');
	}

	urlParams = {};
	while (match = search.exec(query)) {
		urlParams[decode(match[1])] = decode(match[2]);
	}

	if (key) {
		return (typeof urlParams[key]) ? urlParams[key] : false;
	} else {
		return urlParams;
	}
};