_xjs=xjs();
if (_xjs==1) preloadImages();

function brw()
{
	x=0;
	if (navigator.appName.substring(0,8)=="Netscape")  x=1;
	if (navigator.appName.substring(0,9)=="Microsoft") x=0;
	if (navigator.appName.substring(0,9)=="Opera") x=0;
	return x;
}

function xjs()
{
	x=0;
	if (navigator.appName.substring(0,8)=="Netscape"  && parseInt(navigator.appVersion)>=3) x=1;
	if (navigator.appName.substring(0,9)=="Microsoft" && parseInt(navigator.appVersion)>=4) x=1;
	if (navigator.appName.substring(0,9)=="Opera" && parseInt(navigator.appVersion)>=4) x=1;
	return x;
}

function preloadImages()
{
	m01=new Image; m01.src="img/g_kontakt0.gif"; m01_=new Image; m01_.src="img/g_kontakt1.gif"; 
	m02=new Image; m02.src="img/g_certyfikaty0.gif"; m02_=new Image; m02_.src="img/g_certyfikaty1.gif"; 
	m03=new Image; m03.src="img/g_realizacje0.gif"; m03_=new Image; m03_.src="img/g_realizacje1.gif"; 
	m04=new Image; m04.src="img/g_english0.gif"; m04_=new Image; m04_.src="img/g_english1.gif"; 
	m05=new Image; m05.src="img/g_praca0.gif"; m05_=new Image; m05_.src="img/g_praca1.gif"; 

}

function swapImage(t, id)
{
	if (_xjs==1)
	{
		if (t==1) s=eval(id+'_.src');
		if (t==0) s=eval(id+'.src');
		document [id+'i'].src=s;
	}
}

function openwindow (adres, szer, wys, skrol)
{
	var perc = '50';
	var winX = (screen.availWidth - szer)*perc*.01;
	var winY = (screen.availHeight - wys)*perc*.01;

	popupWin = window.open (adres, 'filtry','width=' + szer + ',height=' + wys + ',left=' + winX + ',top=' + winY + ',directories=no,location=no,menubar=no,resizable=no,scrollbars=' + skrol + ',status=no,toolbar=no,screenX=0,screenY=0');
}

function selffocus()
{
 this.focus();
}