var tabs = new Array('tab1', 'tab2');
function activateTab(tab) {
	for (i = 0; i < tabs.length; i++) {
		if (document.getElementById(tabs[i])) {
			document.getElementById(tabs[i]).style.display = 'none';
			document.getElementById(tabs[i] + '1').style.backgroundColor = "#e8ebee";
			document.getElementById(tabs[i] + '1').style.border = "1px solid #616161";
		} 
	}
	document.getElementById(tab).style.display = 'block';
	document.getElementById(tab + '1').style.backgroundColor = "#ffffff";
	document.getElementById('tab21').style.borderLeft = '0px';
	document.getElementById(tab + '1').style.borderBottom = '0px';
}
function podmiana(co) {
	var ile = document.getElementById("wybor").options.length;
	for(var i=1; i<=ile; i++) {
		var ktora = "w"+i;
		if(ktora == co) {
			document.getElementById(ktora).style.display = "block";
		}
		else if(ktora != co) {
			document.getElementById(ktora).style.display = "none";
		}
	}
}
function displayWindow(url, width, height) {
        var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=yes,menubar=no' );
}