<!--
var on=new Array();
function Rollover(imgName, imgSrc)
{
	on[imgName] = new Image();
	on[imgName].src = imgSrc;
}

function On(imgName){ 
	if(document.images[imgName].filters != null)
		document.images[imgName].filters[0].apply();
	document.images[imgName].offSrc = document.images[imgName].src;
	document.images[imgName].src    = on[imgName].src;
	if(document.images[imgName].filters != null)
		document.images[imgName].filters[0].play();
}

var off=new Array();
function Rollout(imgName, imgSrc)
{
	off[imgName] = new Image();
	off[imgName].src = imgSrc;
}
function Off(imgName){ 
if(document.images[imgName].filters != null)
		document.images[imgName].filters[0].apply();
	document.images[imgName].offSrc = document.images[imgName].src;
	document.images[imgName].src    = off[imgName].src;
	if(document.images[imgName].filters != null)
		document.images[imgName].filters[0].play();
}

Rollover("bt1",  "images/firma01.gif");
Rollout("bt1",  "images/firma00.gif");
Rollover("bt2",  "images/oferta01.gif");
Rollout("bt2",  "images/oferta00.gif");
Rollover("bt3",  "images/realizacje01.gif");
Rollout("bt3",  "images/realizacje00.gif");
Rollover("bt4",  "images/kontakt01.gif");
Rollout("bt4",  "images/kontakt00.gif");
//-->