function imgShow(pSrc) {
  var z = pSrc.src;
  var len = z.length;
  var tmp = '';

  len -= 5;
  z.charAt(len) == '0' ? tmp = '1' : tmp = '0';
  pSrc.src = z.substr(0, len) + tmp + z.substr(len + 1, z.length - 1);
}



// div matka, div podkategoria, style matka, style podkategoria 
function menu(divThis, divSubs, cssRoot, cssSubs) {
	if(document.getElementById(divSubs).style.display == 'block') {
		document.getElementById(divSubs).style.display = 'none'; 
		document.getElementById(divThis).className=cssRoot;
		}
	else {
		document.getElementById(divSubs).style.display = 'block';
		document.getElementById(divThis).className=cssSubs;
		}
	}