jsUri=function(s){
	if(s==undefined)
		s='';
	this._uri=this.parseUri(s);
	this._query=new jsUri.query(this._uri.query);
}
jsUri.options={
	strictMode:false,
	key:["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"],
	q:{
		name:"queryKey",
		parser:/(?:^|&)([^&=]*)=?([^&]*)/g
	},
	parser:{
		strict:/^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
		loose:/^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
	}
};

jsUri.prototype={};

jsUri.prototype.parseUri=function(str){
	var o=jsUri.options,m=o.parser[o.strictMode?"strict":"loose"].exec(str),uri={},i=14;
	while(i--)uri[o.key[i]]=m[i]||"";
	uri[o.q.name]={};

	uri[o.key[12]].replace(o.q.parser,function($0,$1,$2){
		if($1)uri[o.q.name][$1]=$2;
	});
	return uri;
}
jsUri.prototype.toString=function(){
	var s='';
	var is=function(s){
		return(s!=null&&s!='');
	}
	if(is(this.protocol())){
		s+=this.protocol();
		if(this.protocol().indexOf(':')!=this.protocol().length-1){
			s+=':';
		}
		s+='//';
	}
	else{
		if(this.hasAuthorityPrefix()&&is(this.host()))
			s+='//';
	}
	if(is(this.userInfo())&&is(this.host())){
		s+=this.userInfo();
		if(this.userInfo().indexOf('@')!=this.userInfo().length-1)
			s+='@';
	}
	if(is(this.host())){
		s+=this.host();
		if(is(this.port()))
			s+=':'+this.port();
	}
	if(is(this.path()))
		s+=this.path();
	else
	if(is(this.host())&&(is(this.query().toString())||is(this.anchor())))
		s+='/';
	if(is(this.query().toString())){
		if(this.query().toString().indexOf('?')!=0)
			s+='?';
		s+=this.query().toString();
	}
	if(is(this.anchor())){
		if(this.anchor().indexOf('#')!=0)
			s+='#';
		s+=this.anchor();
	}
	return s;
}
jsUri.prototype.protocol=function(val){
	if(typeof val!='undefined'){
		this._uri.protocol=val;
	}
	return this._uri.protocol;
}
jsUri.prototype.hasAuthorityPrefix=function(val){
	if(typeof val!='undefined'){
		this._hasAuthorityPrefix=val;
	}
	if(this._hasAuthorityPrefix==null)
		return(this._uri.source.indexOf('//')!=-1);else
		return this._hasAuthorityPrefix;
}
jsUri.prototype.userInfo=function(val){
	if(typeof val!='undefined'){
		this._uri.userInfo=val;
	}
	return this._uri.userInfo;
}
jsUri.prototype.host=function(val){
	if(typeof val!='undefined'){
		this._uri.host=val;
	}
	return this._uri.host;
}
jsUri.prototype.port=function(val){
	if(typeof val!='undefined'){
		this._uri.port=val;
	}
	return this._uri.port;
}
jsUri.prototype.path=function(val){
	if(typeof val!='undefined'){
		this._uri.path=val;
	}
	return this._uri.path;
}
jsUri.prototype.query=function(val){
	if(typeof val!='undefined'){
		this._query=new jsUri.query(val);
	}
	return this._query;
}
jsUri.prototype.anchor=function(val){
	if(typeof val!='undefined'){
		this._uri.anchor=val;
	}
	return this._uri.anchor;
}
jsUri.prototype.setProtocol=function(val){
	this.protocol(val);
	return this;
}
jsUri.prototype.setHasAuthorityPrefix=function(val){
	this.hasAuthorityPrefix(val);
	return this;
}
jsUri.prototype.setUserInfo=function(val){
	this.userInfo(val);
	return this;
}
jsUri.prototype.setHost=function(val){
	this.host(val);
	return this;
}
jsUri.prototype.setPort=function(val){
	this.port(val);
	return this;
}
jsUri.prototype.setPath=function(val){
	this.path(val);
	return this;
}
jsUri.prototype.setQuery=function(val){
	this.query(val);
	return this;
}
jsUri.prototype.setAnchor=function(val){
	this.anchor(val);
	return this;
}
jsUri.query=function(q){
	this.params=this.parseQuery(q);
}
jsUri.query.prototype={};

jsUri.query.prototype.toString=function(){
	var s='';
	for(var p in this.params){
		var param=this.params[p];
		var joined=param.join('=');
		if(s.length>0)
			s+='&';
		s+=param.join('=');
	}
	return s;
}
jsUri.query.prototype.parseQuery=function(q){
	var arr=[];
	if(q==null||q=='')
		return arr;
	var params=q.toString().split(/[&;]/);
	for(var p in params){
		var param=params[p];
		var keyval=param.split('=');
		arr.push([keyval[0],keyval[1]]);
	}
	return arr;
}
jsUri.query.prototype.decode=function(s){
	s=decodeURIComponent(s);
	s=s.replace('+',' ');
	return s;
}
jsUri.prototype.getQueryParamValue=function(key){
	for(var p in this.query().params){
		var param=this.query().params[p];
		if(this.query().decode(key)==this.query().decode(param[0]))
			return param[1];
	}
	return undefined;
}
jsUri.prototype.getQueryParamValues=function(key){
	var arr=[];
	for(var p in this.query().params){
		var param=this.query().params[p];
		if(this.query().decode(key)==this.query().decode(param[0]))
			arr.push(param[1]);
	}
	return arr;
}
jsUri.prototype.deleteQueryParam=function(key,val){
	var arr=[];
	for(var p in this.query().params){
		var param=this.query().params[p];
		if(this.query().decode(param[0])==this.query().decode(key)){
			if(arguments.length<2 || this.query().decode(param[1])==this.query().decode(val)){
				continue;
			}
		}
		arr.push(param);
	}
	this.query().params=arr;
	return this;
}
jsUri.prototype.addQueryParam=function(key,val,index){
	if(arguments.length==3&&index!=-1){
		index=Math.min(index,this.query().params.length);
		this.query().params.splice(index,0,[key,val]);
	}
	else if(arguments.length>0)
		this.query().params.push([key,val]);
	return this;
}
jsUri.prototype.replaceQueryParam=function(key,newVal,oldVal){
	var index=-1;
	for(var p in this.query().params){
		var param=this.query().params[p];
		if(this.query().decode(param[0])==this.query().decode(key)){
			if (arguments.length<3 || this.query().decode(param[1])==this.query().decode(oldVal)){
				index=p;
				break;
			}
		}
	}
	if (arguments.length==3) this.deleteQueryParam(key,oldVal); else this.deleteQueryParam(key);
	return this.addQueryParam(key,newVal,index);
}
jsUri.prototype.clone=function(){
	return new jsUri(this.toString());
}