function svit(obj) {
	document.getElementById(obj).style.backgroundPosition="0px 150px";
}
function nesvit(obj) {
	document.getElementById(obj).style.backgroundPosition="0px 0px";
}

function svit2(obj, kolik) {
	document.getElementById(obj).style.backgroundPosition="0px "+ kolik +"px";
}
function obor (o1,o2,tog) {
	if (o2.className=='vybrat4') o2.className='vybrat5';
	else o2.className='vybrat4';
	var el=document.getElementById(o1);
	if (el.className=='obor') el.className='obor2';
	else el.className='obor';
	toggle(tog);
}
function ukaz(kolik) {
	for (i=1; i<=kolik; i++) {
		co='t' + i;
		co1='o' + i;
		co2='oc' + i;
		if (document.getElementById(co1).className=='obor') document.getElementById(co1).className='obor2';
		//else document.getElementById(co1).className='obor';
		if (document.getElementById(co2).className=='vybrat4') document.getElementById(co2).className='vybrat5';
		//else document.getElementById(co2).className='vybrat4';
		toggle2(co);

	}
}
function toggle(id) {
	var ele = document.getElementById(id);
	if(ele.style.display == "block") {
		ele.style.display = "none";
	} else {
		ele.style.display = "block";
	}
}
function toggle2(id) {
	var ele = document.getElementById(id);
	if(ele.style.display == "block") {
		//ele.style.display = "none";
	} else {
		ele.style.display = "block";
	}
}
function restoreDefault(fld,defaultValue){
	if(fld.value=="") fld.value=defaultValue;
}
function clearDefault(fld,defaultValue){
	if(fld.value==defaultValue) fld.value="";
}