var over='no';
var lastMenu='';
var styleSheetElement;
var oldElement;
var platform=navigator.platform.substr(0,3);
var browser=navigator.appName;
var version=navigator.appVersion.substr(0,1);


if(document.images){

	EredmenyOn=new Image(10,27);
	EredmenyOn.src="images/g2on.jpg";

	EredmenyOff=new Image(10,27);
	EredmenyOff.src="images/g2.jpg";


	cegOn=new Image(10,27);
	cegOn.src="images/g1on.jpg";

	cegOff=new Image(10,27);
	cegOff.src="images/g1.jpg";

	
}

function on(pic){
	if(document.images){
		document.images[pic].src=eval(pic+'On.src');
	}
}

function off(pic){
	if(document.images){
		document.images[pic].src=eval(pic+'Off.src');
	}
}


function menuOn(currentMenu) {
  over='yes'
  if ((browser=='Netscape') && (version<5)){
    if(lastMenu != ''){
	document.images[lastMenu].src=eval(lastMenu + 'Off.src');
	eval('document.'+lastMenu+'Menu.visibility="hidden"');
    }
    document.images[currentMenu].src=eval(currentMenu+'On.src');
    eval('document.'+currentMenu+'Menu.visibility="visible"');
    lastMenu=currentMenu;
  }
  else{
    if(lastMenu!=''){
    	eval('document.images[lastMenu].src='+lastMenu+'Off.src');
	lastMenu=lastMenu+'Menu';
	oldElement=document.getElementById(lastMenu);
	oldElement.style.visibility="hidden";
    }
    eval('document.images[currentMenu].src='+currentMenu+'On.src');
    var layerName=currentMenu+'Menu';
    styleSheetElement=document.getElementById(layerName);
    styleSheetElement.style.visibility="visible";
    lastMenu=currentMenu;
  }
}


function overChecker(currentMenu) {
	over='no';
	lastMenu = currentMenu;
	setTimeout("menuOff()",300);
}

function menuOff(){
	if( over=='no'){
		if((browser=='Netscape') && (version<5)){
			document.images[lastMenu].src=eval(lastMenu+'Off.src');
			eval('document.'+lastMenu+'Menu.visibility="hidden"');
		}
		else{
			eval('document.images[lastMenu].src = '+lastMenu+'Off.src');
			styleSheetElement.style.visibility = "hidden";
		}
	}
}