var zapnutePozadie = true;

function stena(obj)
{
	vypni();
    document.getElementById("pozadie").style.backgroundColor = obj.bgColor;
    document.getElementById("telo").style.backgroundColor = obj.bgColor;
	document.getElementById("lista1").style.backgroundColor = obj.bgColor;
	document.getElementById("lista2").style.backgroundColor = obj.bgColor;
}
function prepni()
{
	if( zapnutePozadie )
		vypni();
	else
		zapni();
}
function vypni()
{
	if( zapnutePozadie ){
		zapnutePozadie = false;
	
		document.getElementById("telo").style.background = "";
		document.getElementById("telo").style.backgroundImage = "none";
		document.getElementById("kategoria").style.visibility = "hidden";
		document.getElementById("lista1").style.background = "";
		document.getElementById("lista2").style.background = "";
		document.getElementById("lista1").style.backgroundImage = "none";
		document.getElementById("lista2").style.backgroundImage = "none";

		document.getElementById("lista12").style.visibility = "hidden";
		document.getElementById("lista22").style.visibility = "hidden";

		document.getElementById("nazov").style.visibility = "hidden";
		document.getElementById("cenatab").style.visibility = "hidden";
	}
}
function zapni()
{
	zapnutePozadie = true;
	
	document.getElementById("pozadie").style.backgroundColor = "";
	document.getElementById("telo").style.background = "url(../design/images/back_bodytop.gif) left top repeat-x";
	document.getElementById("kategoria").style.visibility = "visible";
	document.getElementById("lista1").style.background = "url(../design/images/logo_lista.gif) left top repeat-x";
	document.getElementById("lista2").style.background = "url(../design/images/logo_lista.gif) left top repeat-x";
	document.getElementById("lista12").style.visibility = "visible";
	document.getElementById("lista22").style.visibility = "visible";
	document.getElementById("nazov").style.visibility = "visible";
	document.getElementById("cenatab").style.visibility = "visible";
}