//client variables
	var w3c=(document.getElementById)?1:0;
	var ns4=(document.layers)?1:0;
	var ieX=(document.all)?1:0;
	var ie4=(ieX && !w3c)?1:0;
	var ie5=(ieX && w3c)?1:0;
	var divBg = (ns4) ? 'layer-background-color' : 'background';
	var ua = navigator.userAgent.toLowerCase();
	var	mac = (ua.indexOf("mac")!=-1);
	var _ns6 = (navigator.userAgent.indexOf("Netscape6") > 0);
	//nav variables
	var oTimeOut;
	var nCurrentLevel;
	var sLastMenu = new String();
	var sBackgroundOffColor = "#CBC8BF";

	//write link style for browser
	var sLinkColor;
	if(ns4){
		sLinkColor = "#333333"
	}else{
		sLinkColor = "black"
	}
	document.write("<style>" +
		"A.SubItem{font-size: 12px;color:" +sLinkColor+ ";font-family: Arial, Helvetica;text-decoration: none;}" +
		"A.SubItem:visited{font-size: 12px;color:" +sLinkColor+ ";font-family: Arial, Helvetica;text-decoration: none;}" +
		"A.SubItem:link{font-size: 12px;color:" +sLinkColor+ ";font-family: Arial, Helvetica;text-decoration: none;}" +
		"A.SubItem:hover{font-size: 12px;color:" +sLinkColor+ ";font-family: Arial, Helvetica;text-decoration: none;}" +
		"A.SubItem:active{font-size: 12px;color:" +sLinkColor+ ";font-family: Arial, Helvetica;text-decoration: none;}" +
		"</style>");
		
	
	
	//toggle main menu
	function NavMain(sThisMenu, bOnOff){
		var oMenu;
		
		if(ns4){
			oMenu = document.layers[sThisMenu];		
		} else if (ie4){
			oMenu = eval('document.all.' + sThisMenu);
		} else {
			oMenu = document.getElementById(sThisMenu);
		}
				
		window.clearTimeout(oTimeOut);	
		if(bOnOff){
			if(sLastMenu.length > 0){
				HideNav(sLastMenu);
			}
			sLastMenu = sThisMenu;
			nCurrentLevel = 1;
			divVis(oMenu,1); //turn menu on
		}else{
			nCurrentLevel = 0;
			oTimeOut = window.setTimeout('HideNav("' + sThisMenu + '")',1000); //schedule menu to turn off
		}
	}
	
	//toggle sub item bgcolor
	
	function NavSub(sThisMenu, nLevel, oLink){					
		var oMenu; 
		var sBGColor;
		var sFontColor;

		if(ns4){
			oMenu = document.layers[sLastMenu].document.layers[sThisMenu];		
		} else if (ie4){
			oMenu = eval('document.all.' + sThisMenu);
		} else {
			oMenu = document.getElementById(sThisMenu);
		}
		
		window.clearTimeout(oTimeOut);		

		if(nLevel == 1 || nLevel == 3){
			nCurrentLevel = 2;
			if((_ns6 || ns4) && nLevel == 1){
				sBGColor = "#F29A3A";
			}else if((_ns6 || ns4) && nLevel == 3){
				sBGColor = "#F29A3A";
			}else{
				sBGColor = "white";
			}
		}else{
			nCurrentLevel = 0;
			if(nLevel == 0){
				sBGColor = "#FDD3A1";
			}else{
				sBGColor = "#E7E7DD";
			}
			sFontColor = "black";
			oTimeOut = window.setTimeout('HideNav("' + sLastMenu + '")',500); //schedule main menu to turn off
		}				
		if (ns4){
			oMenu.bgColor = sBGColor;
		}else if(_ns6){
			oMenu.style.backgroundColor = sBGColor;	
		}
		else {
			oLink.style.color = sFontColor;
			oMenu.style.backgroundColor = sBGColor;
		}	
	}

	//hide a nav item
	function HideNav(sMenu){
		var oMenu;

		if(ns4){
			oMenu = document.layers[sMenu];		
		} else if (ie4){
			oMenu = eval('document.all.' + sMenu);
		} else {
			oMenu = document.getElementById(sMenu);
		}
				
		window.clearTimeout(oTimeOut);		
		if(nCurrentLevel == 0){
			divVis(oMenu,0);
		}
	}

	//Show or Hide div
	function divVis(obj,vis){
		if (ns4){
			(vis) ? obj.visibility = 'show' : obj.visibility = 'hide';
		} else {
			(vis) ? obj.style.visibility = 'visible' : obj.style.visibility = 'hidden';
		}
	}
		
		//OLD PLACEHOLDER FUNCTIONS
	function navIni(x){
		//do nothing
	}
	
	function loadHandler(){
		//do nothing
	}

	function pageInit(){
		//do nothing
	}		
	
	
	//Nové okno shránky		 
	function Nove_okno(cURL)
	{
	window.open(cURL,"okno","toolbar=no,scrollbars=yes,resizable=yes,width=800,height=500");
	return false;
	}