function JE_EMAIL(txt){var x = new RegExp('^[^@]+@([a-z,A-Z,0-9,_,-]+[.]{1})+[a-z,A-Z,0-9]{2,5}$'); if (x.exec(txt.toLowerCase())==null) return 0; else return 1;}
function show(id) {if (document.getElementById(id).style.display=='none') document.getElementById(id).style.display='block'; else document.getElementById(id).style.display='none';}
function addEvent(elm, evType, fn, useCapture) {if (elm.addEventListener) {elm.addEventListener(evType, fn, useCapture); return true;} else if (elm.attachEvent) {var r = elm.attachEvent('on'+evType, fn); return r;} else {alert('Došlo k chybě při práci s event');}}
function regnews() {if(JE_EMAIL(document.getElementById('enov').value)==0) {alert('pro registraci novinek musí být e-mail zadán ve správném formátu'); return false;} else {return true;}}
function myParseFloat(str){str=''+str+''; var value=str.match('[-]{0,1}(?:[1-9]+[0-9]*[,.]{0,1}[0-9]*)|(?:0[,.][0-9]*)'); if(value!=null && value.length>0){value[0]=value[0].replace(',','.'); value=parseFloat(value[0])*1; return value;}else{return 0;}}


var Menu = function(idMenu) {
	var menu = document.getElementById(idMenu);
	var submenu = {};
	var open = null;
	
	var u = menu.childNodes;
	var rel;
	for (var i = 0; i < u.length; i++) {
		rel = u[i].getAttribute('rel');
	  if (rel !== null && rel.split('_')[0] == idMenu) {
	    submenu[rel] = document.getElementById(rel);
			addEvent(u[i], 'mouseover', function(event) {
				var target = (event.srcElement) ? event.srcElement : event.target;
				open.style.display = 'none';
				submenu[target.getAttribute('rel')].style.display = 'block';
				open = submenu[target.getAttribute('rel')];
			}, false);
			if (submenu[rel].style.display == 'block') {
			  open = submenu[rel];
			}
		}
	}
	this.select = function(name) {
		open.style.display = 'none';
		submenu[name].style.display = 'block';
		open = submenu[name];
	}
}

var Zalozky = function(id) {
	var tab = {}; // objekt zalozek
	var z = document.getElementById(id).childNodes;
	var open; // prave otevrena zalozka
	var h, i = 0, j = 0, k = 0;
	var cnt; // pocet zalozek
	var cntR = 5; // pocet zalozek na radku

	var cistic = function() {
		var result = document.createElement('div');
		result.setAttribute('class', 'cistic');
		return result;
  };

	var split = function(element) {
		var parent = document.getElementById(id);
		element.nextSibling ? parent.insertBefore(cistic(), element.nextSibling) : parent.appendChild(cistic());
  };

	var links = function(callback) {
  	for (var i = 0; i < z.length; i++) {
  		if (z[i].getAttribute('rel') !== null) {
  		  if (callback(z[i])) {
  		    break;
				}
  		}
  	}
  };

	var replace = function(name) {
		var a = [], position = 0, b;
		links(function(u) {
		  if (name == u.getAttribute('rel')) {
		    b = u;
    		return true;
			}
			position++
		});
		position = cnt - position - 1;
		var col = z.length - Math.floor(position % cntR) - 2;

 		var parent = document.getElementById(id);
 		if (cnt > cntR) {
	 		if (cnt % cntR == 0 || Math.floor(position / cntR) < Math.floor(cnt / cntR)) {
	 			z[col].nextSibling ? parent.insertBefore(b, z[col].nextSibling) : parent.appendChild(b);
		 	}
		 	else {
 		 		parent.insertBefore(b, z[col]);
 		 		parent.insertBefore(z[col], z[1]);
 			}
		}
  };

	var show = function(x) {
		if (tab[x] !== undefined) {
	    tab[open].tab.removeAttribute('class');
	    tab[open].card.style.display = 'none';
	    tab[x].tab.setAttribute('class', 'selected');
	    tab[x].card.style.display = 'block';
	    open = x;
    }
  };

 // iniciace
	links(function(u) {
		var h = u.getAttribute('rel');
    tab[h] = {tab: u, card: document.getElementById(h)};
		tab[h].card.style.display = 'none';
		tab[h].tab.setAttribute('class', '');
    j++;
    if (open === undefined) {open = h;}
    addEvent(u, 'click', function(event) {
      var target = (event.srcElement) ? event.srcElement : event.target;
      var a = target.getAttribute('rel');
//      if (open !== a) {
				show(a);
				replace(open);
//			}
			event.returnValue = false;
			if (event.preventDefault) {
				event.preventDefault();
			}
		}, false);
	});

	cnt = j;
	// zarovnani, vlozi cistic
	if (j > cntR) {
		j = j % cntR;
		if (j > 0) {
			k = 0;
			for (var i in tab) {
				k++;
			  if (j == k) {
					split(tab[i].tab);
					break;
				}
			}
		}
 	}

 	var search = /#([a-z]+)/.exec(location.href);
 	if (search !== null && search[1] != undefined) {
		show(search[1]);
	}
	else {
	  var i = 0;
	  links(function(u) {
			show(u.getAttribute('rel'));
			return true;
		});
	}
};

function kniha_check(form) {
  var err = [];
	if (JE_EMAIL(form.stiz_mail.value) == 0) {
		err.push('Zadejte prosím správný formát e-mailu');
	}
	if (form.stiz_text.value == '') {
		err.push('Vyplňte text se sdělením');
	}
	if (form.knihapranicaptcha.value == '') {
		err.push('Opište kód');
	}
	if (err.length) {
		alert(err.join('\n'));
		return false;
	}
	return true;
}


var hz = new function(){

	this.hoverZalozka=function(obj,pos,co,cim){
		obj.className=obj.className.toString().replace(new RegExp(co,'g'), cim);
		switch(cim){
		  case 'mDefault':
		    document.getElementById('zalozkaL_'+pos).className='mDefaultL';
		    document.getElementById('zalozkaR_'+pos).className='mDefaultR';
			break;
   		default:
		    document.getElementById('zalozkaL_'+pos).className='mL'+pos;
		    document.getElementById('zalozkaR_'+pos).className='mR'+pos;
			break;
		}
	}

	this.click=function(action,id){
    document.getElementById('id_hzFormSearchKat').value=id;
    document.getElementById('id_hzFormSearchKategorie').value=id;
		var f=document.getElementById('id_hzForm');
		f.action=action;
		f.submit();
	}
};