if (document.images) { 
	var onas_down = new Image();
	onas_down.src = "img/onas_down.jpg";
	var onas_up = new Image();
	onas_up.src = "img/onas_up.jpg";

	var jedla_down = new Image();
	jedla_down.src = "img/jedla_down.jpg";
	var jedla_up = new Image();
	jedla_up.src = "img/jedla_up.jpg";
		
	var napoje_down = new Image();
	napoje_down.src = "img/napoje_down.jpg";
	var napoje_up = new Image();
	napoje_up.src = "img/napoje_up.jpg";
		
	var menu_down = new Image();
	menu_down.src = "img/menu_down.jpg";
	var menu_up = new Image();
	menu_up.src = "img/menu_up.jpg";

	var akcie_down = new Image();
	akcie_down.src = "img/akcie_down.jpg";
	var akcie_up = new Image();
	akcie_up.src = "img/akcie_up.jpg";
	
	var foto_down = new Image();
	foto_down.src = "img/foto_down.jpg";
	var foto_up = new Image();
	foto_up.src = "img/foto_up.jpg";
		
	var kontakt_down = new Image();
	kontakt_down.src = "img/kontakt_down.jpg";
	var kontakt_up = new Image();
	kontakt_up.src = "img/kontakt_up.jpg";
}

function MouseOn(imageName) {
	if (document.images) { 
		if( eval(imageName + "_down.complete") ) { 
			document.images[imageName].src = eval( imageName + "_down.src" );
			}
	}
}

function MouseOff(imageName) {
	if (document.images) { 
		if( eval(imageName + "_down.complete") ) { 
			document.images[imageName].src = eval( imageName + "_up.src" );
			}
		}
}