function changeTab(contentid){
	var tabs = Array('tab-klubas', 'tab-dazasvydis', 'tab-sratasvydis', 'tab-pramogos');
	var contents = Array('klubas', 'dazasvydis', 'sratasvydis', 'pramogos');
	var tabid = 'tab-'+contentid;
	
	for(var i = 0; i < tabs.length; i++){
		document.getElementById(tabs[i]).className = "index-tab";
	}
	document.getElementById(tabid).className = "index-tab tab-on";
	for(var i = 0; i < contents.length; i++){
		document.getElementById(contents[i]).className = "index-tab-content displayFalse";
	}
	document.getElementById(contentid).className = "index-tab-content displayTrue";
}
function showSubMeniu(submeniuID){
	document.getElementById(submeniuID).className = submeniuID+" displayTrue";
}
function hideSubMeniu(submeniuID){
	document.getElementById(submeniuID).className = submeniuID+" displayFalse";
}
function showSmallSubMeniu(cls,id){
	document.getElementById(id).className = cls+" displayTrue";
}
function hideSmallSubMeniu(cls,id){
	document.getElementById(id).className = cls+" displayFalse";
}