function zobrparin()
{
 var el1,el2;
	 el1=document.getElementById('tlzo').style;
	 el1.display=(el1.display == 'none')?'inline':'none';

	 el2=document.getElementById('tlsc').style;
	 el2.display=(el2.display == 'inline')?'none':'inline';
}

function zobrpar()
	{

	zobrparin()

	 var el
	 var allElements=document.getElementsByTagName("fieldsett");
	 for (var i=0;i<allElements.length;i++)
	 {
		 if (cls.has(allElements[i],"schov"))
		 {
			 el=allElements[i].style;
			 el.display=(el.display == 'block')?'none':'block';
		 }
	 }
		 
} 

evt = {

 // attach event
 add : function(obj, evType, fn, useCapture) {
 // Opera hack
 if (window.opera && (obj == window)) {
 obj = document;
 }

 if (obj.addEventListener){
 obj.addEventListener(evType, fn, useCapture);
 return true;
 } else if (obj.attachEvent){
 var r = obj.attachEvent("on"+evType, fn);
 return r;
 } else {
 return false;
 }
 },

 // remove event
 remove : function(obj, evType, fn, useCapture) {
 // Opera hack
 if (window.opera && (obj == window)) {
 obj = document;
 }

 if (obj.removeEventListener) {
 obj.removeEventListener(evType, fn, useCapture);
 return true;
 } else if (obj.detachEvent) {
 var r = obj.detachEvent("on"+evType, fn);
 return r;
 } else {
 return false;
 }
 },

 // fix for IE event model
 fix : function(e) {
 if (typeof e == 'undefined') e = window.event;
 if (typeof e.target == 'undefined') e.target = e.srcElement;
 if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
 if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;
 if ((typeof e.which == 'undefined') && e.keyCode) e.which = e.keyCode;

 // thanx to KKL2401 for preventDefault hack
 if (!e.preventDefault) e.preventDefault = function() {
 e.returnValue = false;
 }

 return e;
 }

}



// library for working with multiple classes
var cls = {

 // vrati pole obsahujuce vsetky triedy daneho elementu
 get : function (elm) {
 if (elm && elm.tagName) {
 var classes = [];
 if (elm.className) { // na zaklade Centiho upozornenia o divnej interpretacii v Opere
 var cl = elm.className.replace(/\s+/g, " ");
 classes = cl.split(" ");
 }
 return classes;
 }
 return false;
 },

 // vrati true, ak element obsahuje triedu
 has : function (elm, cl) {
 if ((actCl = cls.get(elm)) && (typeof(cl) == "string")) {
 for (var i = 0; i < actCl.length; i++) {
 if (actCl[i] == cl) {
 return true;
 }
 }
 }
 return false;
 },

 // prida triedu elementu
 add : function (elm, cl) {
 if ((actCl = cls.get(elm)) && (typeof(cl) == "string")) {
 if (!cls.has(elm, cl)) {
 elm.className += (actCl.length > 0) ? " " + cl : cl;
}
return true;
 }
 return false;
 },

 // odstrani triedu z elementu
 remove : function (elm, cl) {
 if ((actCl = cls.get(elm)) && (typeof(cl) == "string")) {
 tempCl = "";
 for (var i = 0; i < actCl.length; i++) {
 if (actCl[i] != cl) {
 if (tempCl != "") {tempCl += " ";}
 tempCl += actCl[i];
 }
 elm.className = tempCl;
 }
 return true;
 }
 return false;
 },

 // nahradi staru triedu elementu novou, ak stara neexistuje, prida novu
 replace : function (elm, oldCl, newCl) {
 if ((actCl = cls.get(elm)) && (typeof(oldCl) == "string") && (typeof(newCl) == "string")) {
 tempCl = "";
 if (cls.has(elm, newCl)) {
 cls.remove(elm, oldCl);
 } else if (cls.has(elm, oldCl)) {
 for (var i = 0; i < actCl.length; i++) {
 if (tempCl != "") {tempCl += " ";}
 tempCl += (actCl[i] == oldCl) ? newCl : actCl[i];
 }
 elm.className = tempCl;
 } else {
 cls.add(elm, newCl);
 }
 return true;
 }
 return false;
 }

}