var ua = navigator.userAgent.toLowerCase();

var isIE;
/*var isGecko;
var isSafari;
var isKonqueror;
var isOpera;*/
isIE = ((ua.indexOf("msie") != -1) && (ua.indexOf("opera") == -1) && (ua.indexOf("webtv") == -1)); 
/*isGecko = (ua.indexOf("gecko") != -1);
isSafari = (ua.indexOf("safari") != -1);
isKonqueror = (ua.indexOf("konqueror") != -1);
isOpera = (ua.indexOf("opera") != -1);*/

function swap(img){
	/*var img = document.getElementById(imgid);*/
	var strOver  = "_on";
	var strOff = "_off";

	if (img.src.indexOf(strOver) != -1)
		img.src = img.src.replace(strOver,strOff)
	else
		img.src = img.src.replace(strOff,strOver)
}
function swap_map(name){
	var img = document.getElementById('big_map');
	if (name != null)
		img.src = "images/map/nmo_"+name+".jpg";
	else
		img.src = "images/map/nmo_alap.jpg";
}
function search(){
	document.getElementById('search_form').submit();
}


function hide_text(input, text){

	if ( input.value == text)
		input.value="";
	
	

}

function show_text(input, text){
	if ( input.value == "")
		input.value=text;
	

}

function hide_message (id){
	document.getElementById(id).style.display='none';
	if (isIE)
		document.getElementById('ie_message').style.display='none';
}

function grassResize(){
	var dom= document.getElementById('wrapper');
	var sidebar = document.getElementById('sidebar_left');
	var size = (sidebar.offsetTop + sidebar.offsetHeight);
	//size=600;
	if ( !isIE )
		dom.style.backgroundPosition ='0px '+size+'px';
	else
		dom.style.backgroundPositionY=size+'px';
}


/*

R�gi�k �s tud�st�r cs�szk�l�s men�

*/
var showed_regiok=false;
var moving_regiok=false;


function showHide(id){
	var dom = document.getElementById('menu_'+id+'_sub');
	var img = document.getElementById(id+'_image');
	var strOver  = "_closed";
	var strOff = "_opened";

	if (img.src.indexOf(strOver) != -1)
		img.src = img.src.replace(strOver,strOff)
	else
		img.src = img.src.replace(strOff,strOver)
	
	if( dom.style.display == 'none' || dom.style.display == ''){
		dom.style.display = 'block';
		dom.style.height = 'auto';
	}else{
		dom.style.display = 'none';
		dom.style.height = '0px';
	}
	grassResize();
}