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 showk(id,dir) {show('kategorie-'+id); if (document.getElementById('kimg'+id).src.indexOf('eshopbaby-r-plus.gif')>-1) document.getElementById('kimg'+id).src=dir+'/eshopbaby-r-minus.gif';	else document.getElementById('kimg'+id).src=dir+'/eshopbaby-r-plus.gif';}
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;}}
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');}}

var Prepinac = function(seznam, id_prepinace, delay) {
	var items = [],
		  clock = 0,
		  count = 0,
		  timer = null,
			p = document.getElementById(id_prepinace),
			parent,
			li = [],
			zpole = (seznam.constructor.toString().indexOf('Array') >= 0);
  if (!delay) delay=3000;
  
	if (zpole) {
	  for (var i = 0; i < seznam.length; i++) {
	    li.push(document.getElementById(seznam[i]));
		}
	}
	else {
		li = document.getElementById(seznam).childNodes;
	}

  count = li.length;

	if (count < 2) {
		return;
	}
	clock = count - 1;
	
	var draw = function(c) {
		items[clock].circle.className = 'item';
		$(items[clock].li).fadeOut('fast', function() {
			clock = (c == count) ? 0 : c;
			items[clock].circle.className = 'item selected';
			$(items[clock].li).fadeIn('fast');
		});
	};

	var tick = function() {
		draw(clock + 1);
		timer = setTimeout(tick, delay);
	};
	
	var init = function() {
		var t, e;

		for (var i = 0;  i < count; i++) {
			e = document.createElement('div');
			e.className = 'item';
			e.className += (i == 0) ? ' selected' : '';
			if (!zpole) {
				e.setAttribute('title', li[i].childNodes[0].innerHTML);
			}
			g = document.createElement('td');
			g.appendChild(e);
			p.appendChild(g);
			t = document.createTextNode(i);
			e.appendChild(t);

			addEvent(e, 'click', function(event) {
			  var target = (event.srcElement) ? event.srcElement : event.target;
			  clearTimeout(timer);
			  draw(1*target.innerHTML);
			  timer = setTimeout(tick, delay);
			});

			li[i].style.display = 'none';
			items[i] = {
				circle : e,
				li : li[i]
			}
		}
	};

	init();
	tick();
};