function showHideDetails(itemId) {
	var itemTr = document.getElementById("item" + itemId);
	if (itemTr.className == "show") {
		itemTr.className = "hide";
		display = "none";
	} else {
		itemTr.className = "show";
		display = "table-row";
	}
	
	var trs = document.getElementsByTagName('tr');
	for(i=0; i < trs.length; ++i) {
 		if (trs[i].id == (itemId + "")) {
 			//alert("tr z dobrym id: " + trs[i].id);
 			trs[i].style.display = display;
 		}
 	}
}