	<!--
	function strpos(str, ch) { for (var i = 0; i < str.length; i++) if (str.substring(i, i+1) == ch) return i; return -1; }

	function swapClass(level, id_java){ 
		var i,x,tB,j=0,tA=new Array();
		var state1 = 'open'; //2
		var state2 = 'closed'; //3
		
		//do tB je ulozen tag <div>
		tB=document.getElementsByTagName('div');

		//pro vsechny li v souboru kopiruje do noveho pole
		for(x=0;x<tB.length;x++){
			// preskocim bez idcka
			if(tB[x].id.substring(0, 6) != 'idjava') continue;
			tA[j]=tB[x];
			j++;
		}

		//pro vsechny div souboru
		for(i=0;i<tA.length;i++){
			if((tA[i].id.length < id_java.length) && (tA[i].id == id_java.substring(0, tA[i].id.length))) tA[i].className = state1;
			else if(tA[i].id != id_java) tA[i].className = state2; 
		}

		if(document.getElementById(id_java).className == state1) document.getElementById(id_java).className = state2;
		else document.getElementById(id_java).className = state1;
	}

	function writeStyles(a){ 
		var tS="<style type=\"text/css\">"+a+"</style>";
		document.write(tS);
		document.close();
	}

	writeStyles('div.closed{ display: none; }div.open{ display:block;}');		
	//-->

