function $(e){
	if(typeof e=='string')e=document.getElementById(e);
	return e
};
function collect(a,f){
	var n=[];
	for(var i=0;i<a.length;i++){
		var v=f(a[i]);
		if(v!=null)
			n.push(v)
	}
	return n
};

ajax = {};
ajax.x = function(){
	try{
		return new ActiveXObject('Msxml2.XMLHTTP')
	}catch(e){
		try{
			return new ActiveXObject('Microsoft.XMLHTTP')
		}catch(e){
			return new XMLHttpRequest()
		}
	}
};
ajax.serialize=function(f){
	var g = function(n){
		return f.getElementsByTagName(n);
	};
	var nv = function(e){
		if(e.name)
			return encodeURIComponent(e.name)+'='+encodeURIComponent(e.value);
		else 
			return '';
	};
	var i = collect(g('input'),function(i){if((i.type!='radio'&&i.type!='checkbox')||i.checked)return nv(i)});
	var s = collect(g('select'),nv);
	var t = collect(g('textarea'),nv);
	return i.concat(s).concat(t).join('&');
};
ajax.send = function(u,f,m,a){
	var x=ajax.x();
	x.open(m,u,true);
	x.onreadystatechange=function(){
		if(x.readyState==4)
			f(x.responseText);
	};
	if(m=='POST')
		x.setRequestHeader('Content-type','application/x-www-form-urlencoded');
	x.send(a);
};
ajax.get = function(url,func){
	ajax.send(url,func,'GET');
};
ajax.gets = function(url){
	var x=ajax.x();
	x.open('GET',url,false);
	x.send(null);
	return x.responseText;
};
ajax.post = function(url,func,args){
	ajax.send(url,func,'POST',args);
};
ajax.update = function(url,elm){
	var e=$(elm);
	var f=function(r){
		e.innerHTML=r;
	};
	ajax.get(url,f);
};
ajax.submit = function(url,resFunc,frm){
	var e = resFunc;
	var f = function(r){
		e(r);
	};
	ajax.post(url,f,ajax.serialize(frm));
};
ajax.submit2 = function(url,elm,frm){
	var e = $(elm);
	var f = function(r){
		e.innerHTML=r;
	};
	ajax.post(url,f,ajax.serialize(frm));
};