var u = false;
var p = false;
var x = false;


function fi(){
	if (!x && typeof XMLHttpRequest!='undefined'){
		x = new XMLHttpRequest();
	}
}


function ff(){
	if(p.length<1) return false;
	s = 'js=1&';
	for(i=0;i<p.length;i++){
		
		if (fg(p[i]).type == 'radio' && fg(p[i]).checked == true){
			v = fg(p[i]).value;
			s += p[i]+"="+v+"&";
		
		} else if (fg(p[i]).type == 'checkbox' && fg(p[i]).checked == true){
			v = fg(p[i]).value;
			s += p[i]+"="+v+"&";
			
		} else if (fg(p[i]).type != 'checkbox' && fg(p[i]).type != 'radio'){
			v = fg(p[i]).value;
			s += p[i]+"="+v+"&";
		}
	}
	
	return s;
}


function fc(){
	fi();
	x.open("POST", u, true);
	x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	x.setRequestHeader("Content-length", p.length);
	x.onreadystatechange = function(){
		if (x.readyState == 4 && x.status == 200) {
			fr(x.responseText);
		}
	}
	x.send(ff());
	return false;
}


function fr(c){
	eval(c);
}


function fg(i){
	return document.getElementById(i);
}


function user_login () {
	p = new Array('username', 'password');
	u = 'login.php';
	fc();
	return false;
}