function zmen(li){
	li.style.backgroundColor="white";	
	for(i=0; i< li.childNodes.length;i++){		
		if(li.childNodes[i].href) li.childNodes[i].style.color = "black";
		//if(li.childNodes[i].href) li.childNodes[i].style.width = "150px";			
	}
}

function vrat(li){
	li.style.backgroundColor= "#E40D00";	
	for(i=0; i< li.childNodes.length;i++){		
		if(li.childNodes[i].href) li.childNodes[i].style.color = "white";			
	}
}

function openli(li){	
	for(i=0; i< li.childNodes.length;i++){		
		if(li.childNodes[i].href) window.location = li.childNodes[i].href  ;			
	}	 
}

function open_hidden(id){
	var vis;
vis =	document.getElementById(id)	;	

if(vis.style.display != "block"){	
	vis.style.display = "block";
	vis.style.padding = "20px";
}
else{
	vis.style.display = "none";
}
	
return true;
}


function popup(source,w,h) { // nahledy produktu
	if (source) {
		window.open(source,'_blank','width='+(w)+',height='+(h)+',status=no,toolbar=no,scrollbars=no,resizable=no,top='+(screen.height/2-h/2)+',left='+(screen.width/2-w/2)+'');
	}
	return false;
}

function check(){
	var inputy = document.getElementsByTagName("input");
	
	for(i = 0; i < inputy.length; i++){
		if(inputy[i].checked){
			var block = document.getElementById(inputy[i].value);
			if(block=='undefined' || block == null) continue;
			block.style.visibility = 'visible';						
		}
		else{
			if(inputy[i].type != 'checkbox') continue;
			var block = document.getElementById(inputy[i].value);
			if(block=='undefined' || block == null) continue;
			block.style.visibility = 'hidden';						
		
		};
	}
}


function check_writeus(){
//email

var info='';
var Message1 = "Pole pro email mus&iacute; obsahovat validn&iacute; emailovou adresu <br />";
var Message2 = "Pole pro zpr&aacute;vu mus&iacute; obsahovat text <br />";
var Message3 = "Pole pro v&yacute;sledek mus&iacute; obsahovat &#269;&iacute;slo <br />";

var	regExpMail  =  /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/ ;
var email = document.getElementById('mailfrom').value;
var result1=regExpMail.test(email); //

var text =  document.getElementById('message_w').value;
var result2 = (text == '') ? false : true;

var cislo = document.getElementById('mail_vysledek').value;
var regExpNumber= /^\d+$/ ;
var result3 = regExpNumber.test(cislo);

if(!result1) info += Message1;
if(!result2) info += Message2;
if(!result3) info += Message3;

if(info == '' ) return true;
document.getElementById('message_info').innerHTML = info;
return false;
}

function check_cetelem(radio){
	//var radios = document.getElementsByName('');
	var cetelem = document.getElementById('cetelem');
	
	if(radio.value == 'cetelem'){
	 	
	 	cetelem.style.display = 'block';
	}
	else{	
		cetelem.style.display = 'none';
	}
	
}

function set_kraj(el){

	var form = document.getElementById('kraj_form');	
		  
	var kraj = document.createElement('input');
	kraj.setAttribute('type','hidden');
	kraj.setAttribute('name','kraj');
	kraj.setAttribute('value',el.alt);	
	form.appendChild(kraj); 
	
	form.submit();	
	return false;
}

/**
function prepocti_cenu(){

	var cena_blok = document.getElementsByName('cena'); 
	var cena_bezna_blok = document.getElementsByName('cena_bezna');
	var sleva_blok = document.getElementsByName('sleva');
	var cena;	
	cena = cena_bezna_blok.value - ( cena_bezna_blok.value/100 * sleva_bezna_block.value); 
	cena_blok.value = cena ;	
}*/