function change_size(punkt) {
	document.getElementById('tresc').style.fontSize=punkt;	
	createCookie("textSize", punkt, 90);
}

function gr(co){	
	document.getElementById('cf1').style.backgroundImage="url(img/mainnews_non.png)";
	document.getElementById('cf2').style.backgroundImage="url(img/mainnews_non.png)";
	document.getElementById('cf3').style.backgroundImage="url(img/mainnews_non.png)";	
	document.getElementById('gk1').style.display="none";
	document.getElementById('gk2').style.display="none";
	document.getElementById('gk3').style.display="none";	
	document.getElementById('cf'+co+'').style.backgroundImage="url(img/mainnews_hover.png)";
	document.getElementById('gk'+co+'').style.display="block";
}