od01=new Image();
od01.src="images/flags/cz-over.jpg";
od02=new Image();
od02.src="images/flags/en-over.jpg";

function deover (img) 
{
	document.images[img].src='images/flags/'+img+'-over.jpg';
}

function over (img) 
{
	document.images[img].src='images/flags/'+img+'.jpg';
}