/*copyright Koller 2005*/
function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);


<!-- Rollover
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->

<!--Formular-->

function initForm()
{
	var downloadForm = document.getElementById("downloadForm");
	downloadForm.onsubmit = checkForm;
}




function checkForm()
{
	var labels = this.getElementsByTagName("label");
	var error = false;
	var first = null;

	for (var i = 0; i < labels.length; i++)
	{
		if (labels[i].className.classExists("required"))
		{
			var input = labels[i].getElementsByTagName("input")[0] || labels[i].getElementsByTagName("textarea")[0] || labels[i].getElementsByTagName("select")[0];
			var spans = labels[i].getElementsByTagName("span");
			var errorText = null;
			var labelText = null;

			for (var j = 0; j < spans.length; j++)
			{
				if (spans[j].className.classExists("labelText"))
				{
					var labelText = spans[j];
				}
			}

			if (input != null)
			{
				if (input.value == "")
				{
					errorText = "Prosim vyplnte toto pole";
				}
				else if (labels[i].className.classExists("requiredEmail") && !input.value.validEmail())
				{
					errorText = "Prosim vyplnte toto pole";
				}

				if (errorText != null)
				{
					if (first == null)
					{
						first = input;
					}

					error = true;
					writeCorrection(labels[i], errorText);

					if (input.nodeName.toLowerCase() == "input" && input.getAttribute("type") == "text")
					{
						input.onkeyup = checkValidity;
					}
					else if (input.nodeName.toLowerCase() == "select")
					{
						input.onchange = checkValidity;
					}
				}
				else
				{
					writeCorrection(labels[i]);
				}
			}
		}
	}

	if (error)
	{
		first.focus();

		return false;
	}

	return true;
}




function writeCorrection(label, text, correct)
{
	var spans = label.getElementsByTagName("span");
	var input = label.getElementsByTagName("input")[0] || label.getElementsByTagName("textarea")[0] || label.getElementsByTagName("select")[0];
	var image = label.getElementsByTagName("img")[0];

	if (typeof text == "undefined")
	{
		if (image != null)
		{
			label.removeChild(image);
		}

		for (var j = 0; j < spans.length; j++)
		{
			if (spans[j].className.classExists("correctionText"))
			{
				label.removeChild(spans[j]);

				break;
			}
		}
	}
	else
	{
		if (image == null)
		{
			image = document.createElement("img");
			image.className = "correctionIcon";
			image = label.insertBefore(image, input);

			var newText = document.createElement("span");
			newText.className = "correctionText";
			label.appendChild(newText);
		}

		var spans = label.getElementsByTagName("span");

		for (var j = 0; j < spans.length; j++)
		{
			if (spans[j].className.classExists("correctionText"))
			{
				var correctionText = spans[j];

				break;
			}
		}

		if (correct == true)
		{
			image.setAttribute("src", "images/main/contactgreen.gif");
			image.setAttribute("alt", "Correct");
			correctionText.className = correctionText.className.removeClass("warning");
		}
		else
		{
			image.setAttribute("src", "images/main/contactyellow.gif");
			image.setAttribute("alt", "Incorrect");
			correctionText.className = correctionText.className.addClass("warning");
		}

		writeSpan(correctionText, text);
	}

	return true;
}



function writeSpan(span, text)
{
	var children = span.childNodes;

	for (var i = 0; children.length > 0;)
	{
		span.removeChild(children[i]);
	}

	var textNode = document.createTextNode(text);
	span.appendChild(textNode);

	return true;
}


<!--String Library - for Form-->

/* Add a class to a string */
String.prototype.addClass = function(theClass)
{
	if (this != "")
	{
		if (!this.classExists(theClass))
		{
			return this + " " + theClass;
		}
	}
	else
	{
		return theClass;
	}
	
	return this;
}




/* Check if a class exists in a string */
String.prototype.classExists = function(theClass)
{
	var regString = "(^| )" + theClass + "\W*";
	var regExpression = new RegExp(regString);
	
	if (regExpression.test(this))
	{
		return true;
	}
	
	return false;
}



/* Remove a class from a string */
String.prototype.removeClass = function(theClass)
{
	var regString = "(^| )" + theClass + "\W*";
	var regExpression = new RegExp(regString);
	
	return this.replace(regExpression, "");
}


String.prototype.validEmail = function()
{
	if (this.match(/^[\w\.\-]+@([\w\-]+\.)+[a-zA-Z]+$/))
	{
		return true;
	}
	
	return false;
}

/*Datumscopyrightfunktion*/
 today=new Date();
 y0=today.getFullYear();