uri.js

function URI(uri,base){
	var a, _loc = location, self = this;
	if (base) {//via nanto_vi
		var XHTML_NS = "http://www.w3.org/1999/xhtml";
		var XML_NS   = "http://www.w3.org/XML/1998/namespace";
		a = document.createElementNS(XHTML_NS, 'a');
		a.setAttributeNS(XML_NS, 'xml:base', base);
	} else if (URI.cache) {
		a = URI.cache;
	} else {
		a = URI.cache = document.createElement('a');
	}
	a.href = uri;
	for (var k in _loc)
		if (a[k] !== void 0)
			this[k] = a[k];
}
URI.prototype.toString = function(){
	return this.href;
};
URI.prototype.get_param = function(){
	if (this.param) return this.param;
	var res = {}, keys = [], values = [];
	this.search.substring(1).split('&').forEach(function(q){
		var p = q.split('=');
		res[p[0]] = p[1];
		keys.push(p[0]);
		values.push(p[1]);
	});
	return (this.param = {hash:res,keys:keys,values:values});
};
//var u=new URI('../hoge?a=2&d=4','http://ss-o.net/test/');
//console.log(u, u.get_param());