function rozwin()
{
 document.getElementById('rozwin').style.display='block';
 document.getElementById('zwin').style.display='none';
 }

function zwin()
{
 document.getElementById('rozwin').style.display='none';
 document.getElementById('zwin').style.display='block';
 }
 
 function gr(co){	
	document.getElementById('cf1').style.backgroundImage="url(img/main_off.png)";
	document.getElementById('cf2').style.backgroundImage="url(img/main_off.png)";
	document.getElementById('cf3').style.backgroundImage="url(img/main_off.png)";
	document.getElementById('cf4').style.backgroundImage="url(img/main_off.png)";
	document.getElementById('cf5').style.backgroundImage="url(img/main_off.png)";

	document.getElementById('gk1').style.display="none";
	document.getElementById('gk2').style.display="none";
	document.getElementById('gk3').style.display="none";
	document.getElementById('gk4').style.display="none";
	document.getElementById('gk5').style.display="none";

	
	document.getElementById('cf'+co+'').style.backgroundImage="url(img/main_on.png)";
	document.getElementById('gk'+co+'').style.display="block";
}