//funkce nejdrive skryje vsechny divy a pak zobrazi ten v parametru
function show(id) {
	
	hideAll();
	BlueBackgroundAll();
	GreyBackground(id-8);
	var show=document.getElementById(id).style;
	show.display='block';
	
}

function hideAll() {
	for (i=9; i<=13; i++) {
		var hide;
		hide = document.getElementById(i);
		if (hide) {
			hide.style.display='none';
		}
		
	}
	
}

function BlueBackgroundAll() {
	for (i=1; i<=5; i++) {
		var showoff=document.getElementById(i);
		if (showoff) {
			showoff.style.background='#003466';
			showoff.style.color='white';
			showoff.style.fontWeight='normal';
		}
	}
}


function GreyBackground(id) {
	var showoff=document.getElementById(id).style;
	showoff.background='#FF9966';
	showoff.color='black';
	showoff.fontWeight='bold';
	
}


function hide(id) {
	var show=document.getElementById(id).style;
	show.display='none';
}