function nextHistb(){
	var bl = 'hisb' + (tek + 1);
	if(document.getElementById(bl)) tek = tek + 1;

	for(var i = 0; i <= 10000; i ++){
		if(!document.getElementById('hisb' + i)) break;
		document.getElementById('hisb' + i).style.display = 'none';
	}

	document.getElementById('hisb' + tek).style.display = 'block';
	setSrc();
}

function prevHistb(){
	var bl = 'hisb' + (tek - 1);
	if(document.getElementById(bl)) tek = tek - 1;

	for(var i = 0; i <= 10000; i ++){
		if(!document.getElementById('hisb' + i)) break;
		document.getElementById('hisb' + i).style.display = 'none';
	}

	document.getElementById('hisb' + tek).style.display = 'block';
	setSrc();
}

function setSrc(){
	var nbl = 'hisb' + (tek + 1);
	var pbl = 'hisb' + (tek - 1);

	if(document.getElementById(nbl)) document.getElementById('nhisb').src = 'images/arrow_r2.gif';
	else document.getElementById('nhisb').src = 'images/arrow_r1.gif';

	if(document.getElementById(pbl)) document.getElementById('phisb').src = 'images/arrow_l2.gif';
	else document.getElementById('phisb').src = 'images/arrow_l1.gif';
}

function showAddr(id){
	document.getElementById('addrm').style.display = 'none';
	document.getElementById('addrj').style.display = 'none';
	document.getElementById('addrb').style.display = 'none';

	document.getElementById('acapm').className = 'capt';
	document.getElementById('acapj').className = 'capt';
	document.getElementById('acapb').className = 'capt';

	document.getElementById('addr' + id).style.display = 'block';
	document.getElementById('acap' + id).className = 'spancapt';
}