function g(id){
	return document.getElementById(id);	
}
function menuOn(div,desc){
	div.className="menuDivOn";
	g(desc).className="opisDivOn";
}
function menuOff(div,desc){
	div.className="menuDivOff";
	g(desc).className="opisDivOff";
}
function load(){
	var homeDiv=g("homeDiv");
	homeDiv.onmouseover=function(){menuOn(this,'home');};
	homeDiv.onmouseout=function(){menuOff(this,'home');};
	homeDiv.className="menuDivOff";

	var ofertaDiv=g("ofertaDiv");
	ofertaDiv.onmouseover=function(){menuOn(this,'oferta');};
	ofertaDiv.onmouseout=function(){menuOff(this,'oferta');};
	ofertaDiv.className="menuDivOff";

	var portfolioDiv=g("portfolioDiv");
	portfolioDiv.onmouseover=function(){menuOn(this,'portfolio');};
	portfolioDiv.onmouseout=function(){menuOff(this,'portfolio');};
	portfolioDiv.className="menuDivOff";

	var kontaktDiv=g("kontaktDiv");
	kontaktDiv.onmouseover=function(){menuOn(this,'kontakt');};
	kontaktDiv.onmouseout=function(){menuOff(this,'kontakt');};
	kontaktDiv.className="menuDivOff";
}