var page = false;
var cnt = 0;
var size = 'big';

function loaddoc(url) {
	page = false;
	if (window.XMLHttpRequest) { // Mozilla, Safari,…
		page = new XMLHttpRequest();
		if (page.overrideMimeType) {
			page.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			page = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				page = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	if (!page) {
  	setTimeout("podstaw_banner()", 1000);
	}

	page.onreadystatechange=atload;
	page.open('GET', 'banner.php?size=' + size + '&cnt=' + url, true);
	page.send(null);
}

function atload() {
	if (page.readyState == 4) {
	  if (page.status == 200) {
  		document.getElementById("banner").innerHTML=page.responseText;
//  		gettime();
  	} else
  		setTimeout("podstaw_banner()", 500);
	}
}

function gettime() {
	if (document.getElementById("czas"))
		setTimeout("podstaw_banner()", (document.getElementById("czas").innerHTML * 1000));
	else
		setTimeout("gettime()", 1000);
}

function podstaw_banner() {
	cnt++;
  loaddoc(cnt);
}