function setCheckboxes(the_form, do_check)
{
    var elts      = (typeof(document.forms[the_form].elements['selected_db[]']) != 'undefined')
                  ? document.forms[the_form].elements['selected_db[]']
                  : (typeof(document.forms[the_form].elements['selected_item[]']) != 'undefined')
          ? document.forms[the_form].elements['selected_item[]']
          : document.forms[the_form].elements['selected_fld[]'];
    var elts_cnt  = (typeof(elts.length) != 'undefined')
                  ? elts.length
                  : 0;

    if (elts_cnt) {
        for (var i = 0; i < elts_cnt; i++) {
            elts[i].checked = do_check;
        } // end for
    } else {
        elts.checked        = do_check;
    } // end if... else

    return true;
} // end of the 'setCheckboxes()' function


function toggleLayer(whichLayer)
{
  if (document.getElementById)
  {
  // this is the way the standards work
  var style2 = document.getElementById(whichLayer).style;
  style2.display = style2.display? "":"block";
  }
  else if (document.all)
  {
  // this is the way old msie versions work
  var style2 = document.all[whichLayer].style;
  style2.display = style2.display? "":"block";
  }
  else if (document.layers)
  {
  // this is the way nn4 works
  var style2 = document.layers[whichLayer].style;
  style2.display = style2.display? "":"block";
  }
}

function AddToBookmarks (url,title)
{
  window.external.AddFavorite(url,title);
}







if (typeof document.attachEvent!='undefined') {
   window.attachEvent('onload',init);
   document.attachEvent('onmousemove',moveMouse);
   document.attachEvent('onclick',checkMove); }
else {
   window.addEventListener('load',init,false);
   document.addEventListener('mousemove',moveMouse,false);
   document.addEventListener('click',checkMove,false);
}

var oDv=document.createElement("div");
var dvHdr=document.createElement("div");
var dvBdy=document.createElement("div");
var windowlock,boxMove,fixposx,fixposy,lockX,lockY,fixx,fixy,ox,oy,boxLeft,boxRight,boxTop,boxBottom,evt,mouseX,mouseY,boxOpen,totalScrollTop,totalScrollLeft;
boxOpen=false;
ox=10;
oy=10;
lockX=0;
lockY=0;

function init() {
	oDv.appendChild(dvHdr);
	oDv.appendChild(dvBdy);
	oDv.style.position="absolute";
	oDv.style.visibility='hidden';
	document.body.appendChild(oDv);	
}

function defHdrStyle() {
	dvHdr.innerHTML='<img style="vertical-align:middle"  src="info.gif">&nbsp;&nbsp;'+dvHdr.innerHTML;
	dvHdr.style.fontWeight='normal';
	dvHdr.style.width='300px';
	dvHdr.style.fontFamily='Verdana';
	dvHdr.style.border='1px solid #A5CFE9';
	dvHdr.style.padding='3';
	dvHdr.style.fontSize='75%';
	dvHdr.style.textAlign='left';	
	dvHdr.style.color='#4e4e4e';
	dvHdr.style.background='#ebf1fa';
	dvHdr.style.marginLeft='10px';	
	dvHdr.style.filter='alpha(opacity=100)'; // IE
	dvHdr.style.opacity='1'; // FF
}

function defBdyStyle() {
	dvBdy.style.borderBottom='1px solid #A5CFE9';
	dvHdr.style.border='1px solid #A5CFE9';
	dvBdy.style.borderLeft='1px solid #A5CFE9';
	dvBdy.style.borderRight='1px solid #A5CFE9';
	dvBdy.style.width='300px';
	dvBdy.style.fontFamily='verdana';
	dvBdy.style.fontSize='85%';
	dvBdy.style.padding='3';
	dvBdy.style.color='#1B4966';
	dvBdy.style.background='#FFFFFF';
	dvBdy.style.filter='alpha(opacity=100)'; // IE
	dvBdy.style.opacity='1'; // FF
}

function checkElemBO(txt) {
if (!txt || typeof(txt) != 'string') return false;
if ((txt.indexOf('header')>-1)&&(txt.indexOf('body')>-1)&&(txt.indexOf('[')>-1)&&(txt.indexOf('[')>-1)) 
   return true;
else
   return false;
}

function scanBO(curNode) {
	  if (checkElemBO(curNode.title)) {
         curNode.boHDR=getParam('header',curNode.title);
         curNode.boBDY=getParam('body',curNode.title);
			curNode.boCSSBDY=getParam('cssbody',curNode.title);			
			curNode.boCSSHDR=getParam('cssheader',curNode.title);
			curNode.IEbugfix=(getParam('hideselects',curNode.title)=='on')?true:false;
			curNode.fixX=parseInt(getParam('fixedrelx',curNode.title));
			curNode.fixY=parseInt(getParam('fixedrely',curNode.title));
			curNode.absX=parseInt(getParam('fixedabsx',curNode.title));
			curNode.absY=parseInt(getParam('fixedabsy',curNode.title));
			curNode.offY=(getParam('offsety',curNode.title)!='')?parseInt(getParam('offsety',curNode.title)):10;
			curNode.offX=(getParam('offsetx',curNode.title)!='')?parseInt(getParam('offsetx',curNode.title)):10;
			curNode.fade=(getParam('fade',curNode.title)=='on')?true:false;
			curNode.fadespeed=(getParam('fadespeed',curNode.title)!='')?getParam('fadespeed',curNode.title):0.04;
			curNode.delay=(getParam('delay',curNode.title)!='')?parseInt(getParam('delay',curNode.title)):0;
			if (getParam('requireclick',curNode.title)=='on') {
				curNode.requireclick=true;
				document.all?curNode.attachEvent('onclick',showHideBox):curNode.addEventListener('click',showHideBox,false);
				document.all?curNode.attachEvent('onmouseover',hideBox):curNode.addEventListener('mouseover',hideBox,false);
			}
			else {// Note : if requireclick is on the stop clicks are ignored   			
   			if (getParam('doubleclickstop',curNode.title)!='off') {
   				document.all?curNode.attachEvent('ondblclick',pauseBox):curNode.addEventListener('dblclick',pauseBox,false);
   			}	
   			if (getParam('singleclickstop',curNode.title)=='on') {
   				document.all?curNode.attachEvent('onclick',pauseBox):curNode.addEventListener('click',pauseBox,false);
   			}
   		}
			curNode.windowLock=getParam('windowlock',curNode.title).toLowerCase()=='off'?false:true;
			curNode.title='';
			curNode.hasbox=1;
	   }
	   else
	      curNode.hasbox=2;   
}


function getParam(param,list) {
	var reg = new RegExp('([^a-zA-Z]' + param + '|^' + param + ')\\s*=\\s*\\[\\s*(((\\[\\[)|(\\]\\])|([^\\]\\[]))*)\\s*\\]');
	var res = reg.exec(list);
	var returnvar;
	if(res)
		return res[2].replace('[[','[').replace(']]',']');
	else
		return '';
}

function Left(elem){	
	var x=0;
	if (elem.calcLeft)
		return elem.calcLeft;
	var oElem=elem;
	while(elem){
		 if ((elem.currentStyle)&& (!isNaN(parseInt(elem.currentStyle.borderLeftWidth)))&&(x!=0))
		 	x+=parseInt(elem.currentStyle.borderLeftWidth);
		 x+=elem.offsetLeft;
		 elem=elem.offsetParent;
	  } 
	oElem.calcLeft=x;
	return x;
	}

function Top(elem){
	 var x=0;
	 if (elem.calcTop)
	 	return elem.calcTop;
	 var oElem=elem;
	 while(elem){		
	 	 if ((elem.currentStyle)&& (!isNaN(parseInt(elem.currentStyle.borderTopWidth)))&&(x!=0))
		 	x+=parseInt(elem.currentStyle.borderTopWidth); 
		 x+=elem.offsetTop;
	         elem=elem.offsetParent;
 	 } 
 	 oElem.calcTop=x;
 	 return x;
 	 
}

var ah,ab;
function applyStyles() {
	if(ab)
		oDv.removeChild(dvBdy);
	if (ah)
		oDv.removeChild(dvHdr);
	dvHdr=document.createElement("div");
	dvBdy=document.createElement("div");
	CBE.boCSSBDY?dvBdy.className=CBE.boCSSBDY:defBdyStyle();
	CBE.boCSSHDR?dvHdr.className=CBE.boCSSHDR:defHdrStyle();
	dvHdr.innerHTML=CBE.boHDR;
	dvBdy.innerHTML=CBE.boBDY;
	ah=false;
	ab=false;
	if (CBE.boHDR!='') {		
		oDv.appendChild(dvHdr);
		ah=true;
	}	
	if (CBE.boBDY!=''){
		oDv.appendChild(dvBdy);
		ab=true;
	}	
}

var CSE,iterElem,LSE,CBE,LBE, totalScrollLeft, totalScrollTop, width, height ;
var ini=false;

// Customised function for inner window dimension
function SHW() {
   if (document.body && (document.body.clientWidth !=0)) {
      width=document.body.clientWidth;
      height=document.body.clientHeight;
   }
   if (document.documentElement && (document.documentElement.clientWidth!=0) && (document.body.clientWidth + 20 >= document.documentElement.clientWidth)) {
      width=document.documentElement.clientWidth;   
      height=document.documentElement.clientHeight;   
   }   
   return [width,height];
}


var ID=null;
function moveMouse(e) {
   //boxMove=true;
	e?evt=e:evt=event;
	
	CSE=evt.target?evt.target:evt.srcElement;
	
	if (!CSE.hasbox) {
	   // Note we need to scan up DOM here, some elements like TR don't get triggered as srcElement
	   iElem=CSE;
	   while ((iElem.parentNode) && (!iElem.hasbox)) {
	      scanBO(iElem);
	      iElem=iElem.parentNode;
	   }	   
	}
	
	if ((CSE!=LSE)&&(!isChild(CSE,dvHdr))&&(!isChild(CSE,dvBdy))){		
	   if (!CSE.boxItem) {
			iterElem=CSE;
			while ((iterElem.hasbox==2)&&(iterElem.parentNode))
					iterElem=iterElem.parentNode; 
			CSE.boxItem=iterElem;
			}
		iterElem=CSE.boxItem;
		if (CSE.boxItem&&(CSE.boxItem.hasbox==1))  {
			LBE=CBE;
			CBE=iterElem;
			if (CBE!=LBE) {
				applyStyles();
				if (!CBE.requireclick)
					if (CBE.fade) {
						if (ID!=null)
							clearTimeout(ID);
						ID=setTimeout("fadeIn("+CBE.fadespeed+")",CBE.delay);
					}
					else {
						if (ID!=null)
							clearTimeout(ID);
						COL=1;
						ID=setTimeout("oDv.style.visibility='visible';ID=null;",CBE.delay);						
					}
				if (CBE.IEbugfix) {hideSelects();} 
				fixposx=!isNaN(CBE.fixX)?Left(CBE)+CBE.fixX:CBE.absX;
				fixposy=!isNaN(CBE.fixY)?Top(CBE)+CBE.fixY:CBE.absY;			
				lockX=0;
				lockY=0;
				boxMove=true;
				ox=CBE.offX?CBE.offX:10;
				oy=CBE.offY?CBE.offY:10;
			}
		}
		else if (!isChild(CSE,dvHdr) && !isChild(CSE,dvBdy) && (boxMove))	{
			// The conditional here fixes flickering between tables cells.
			if ((!isChild(CBE,CSE)) || (CSE.tagName!='TABLE')) {   			
   			CBE=null;
   			if (ID!=null)
  					clearTimeout(ID);
   			fadeOut();
   			showSelects();
			}
		}
		LSE=CSE;
	}
	else if (((isChild(CSE,dvHdr) || isChild(CSE,dvBdy))&&(boxMove))) {
		totalScrollLeft=0;
		totalScrollTop=0;
		
		iterElem=CSE;
		while(iterElem) {
			if(!isNaN(parseInt(iterElem.scrollTop)))
				totalScrollTop+=parseInt(iterElem.scrollTop);
			if(!isNaN(parseInt(iterElem.scrollLeft)))
				totalScrollLeft+=parseInt(iterElem.scrollLeft);
			iterElem=iterElem.parentNode;			
		}
		if (CBE!=null) {
			boxLeft=Left(CBE)-totalScrollLeft;
			boxRight=parseInt(Left(CBE)+CBE.offsetWidth)-totalScrollLeft;
			boxTop=Top(CBE)-totalScrollTop;
			boxBottom=parseInt(Top(CBE)+CBE.offsetHeight)-totalScrollTop;
			doCheck();
		}
	}
	
	if (boxMove&&CBE) {
		// This added to alleviate bug in IE6 w.r.t DOCTYPE
		bodyScrollTop=document.documentElement&&document.documentElement.scrollTop?document.documentElement.scrollTop:document.body.scrollTop;
		bodyScrollLet=document.documentElement&&document.documentElement.scrollLeft?document.documentElement.scrollLeft:document.body.scrollLeft;
		mouseX=evt.pageX?evt.pageX-bodyScrollLet:evt.clientX-document.body.clientLeft;
		mouseY=evt.pageY?evt.pageY-bodyScrollTop:evt.clientY-document.body.clientTop;
		if ((CBE)&&(CBE.windowLock)) {
			mouseY < -oy?lockY=-mouseY-oy:lockY=0;
			mouseX < -ox?lockX=-mouseX-ox:lockX=0;
			mouseY > (SHW()[1]-oDv.offsetHeight-oy)?lockY=-mouseY+SHW()[1]-oDv.offsetHeight-oy:lockY=lockY;
			mouseX > (SHW()[0]-dvBdy.offsetWidth-ox)?lockX=-mouseX-ox+SHW()[0]-dvBdy.offsetWidth:lockX=lockX;			
		}
		oDv.style.left=((fixposx)||(fixposx==0))?fixposx:bodyScrollLet+mouseX+ox+lockX+"px";
		oDv.style.top=((fixposy)||(fixposy==0))?fixposy:bodyScrollTop+mouseY+oy+lockY+"px";		
		
	}
}

function doCheck() {	
	if (   (mouseX < boxLeft)    ||     (mouseX >boxRight)     || (mouseY < boxTop) || (mouseY > boxBottom)) {
		if (!CBE.requireclick)
			fadeOut();
		if (CBE.IEbugfix) {showSelects();}
		CBE=null;
	}
}

function pauseBox(e) {
   e?evt=e:evt=event;
	boxMove=false;
	evt.cancelBubble=true;
}

function showHideBox(e) {
	oDv.style.visibility=(oDv.style.visibility!='visible')?'visible':'hidden';
}

function hideBox(e) {
	oDv.style.visibility='hidden';
}

var COL=0;
var stopfade=false;
function fadeIn(fs) {
		ID=null;
		COL=0;
		oDv.style.visibility='visible';
		fadeIn2(fs);
}

function fadeIn2(fs) {
		COL=COL+fs;
		COL=(COL>1)?1:COL;
		oDv.style.filter='alpha(opacity='+parseInt(100*COL)+')';
		oDv.style.opacity=COL;
		if (COL<1)
		 setTimeout("fadeIn2("+fs+")",20);		
}


function fadeOut() {
	oDv.style.visibility='hidden';
	
}

function isChild(s,d) {
	while(s) {
		if (s==d) 
			return true;
		s=s.parentNode;
	}
	return false;
}

var cSrc;
function checkMove(e) {
	e?evt=e:evt=event;
	cSrc=evt.target?evt.target:evt.srcElement;
	if ((!boxMove)&&(!isChild(cSrc,oDv))) {
		fadeOut();
		if (CBE&&CBE.IEbugfix) {showSelects();}
		boxMove=true;
		CBE=null;
	}
}

function showSelects(){
   var elements = document.getElementsByTagName("select");
   for (i=0;i< elements.length;i++){
      elements[i].style.visibility='visible';
   }
}

function hideSelects(){
   var elements = document.getElementsByTagName("select");
   for (i=0;i< elements.length;i++){
   elements[i].style.visibility='hidden';
   }
}




function zobrazInfo(){
	document.getElementById('info').style.display="block";
	document.getElementById('pocet').style.display="block";
	document.getElementById('area').style.margin="0em 0em .3em .3em";
	document.getElementById('enter').disabled = "disabled";
}
function pocet(){
        area = document.getElementById('area');
	alength = area.value.length;
	if(alength > 255){
		area.value = area.value.substr(0,255);
		document.getElementById('cislo').innerHTML="max";
		document.getElementById('cislo').style.color="red";
	} else {
		document.getElementById('cislo').innerHTML=alength;
		document.getElementById('cislo').style.color="black";
	}
	if(alength >= 1) {
		document.getElementById('enter').disabled = "";
	} else {
		document.getElementById('enter').disabled = "disabled";
	}
	
}

function pocet1(){
        area = document.getElementById('area1');
	alength = area.value.length;
	if(alength > 255){
		area.value = area.value.substr(0,255);
		document.getElementById('cislo1').innerHTML="max";
		document.getElementById('cislo1').style.color="red";
	} else {
		document.getElementById('cislo1').innerHTML=alength;
		document.getElementById('cislo1').style.color="black";
	}
	if(alength >= 1) {
		document.getElementById('enter').disabled = "";
	} else {
		document.getElementById('enter').disabled = "disabled";
	}
	
}


function chat(){
        area = document.getElementById('area');
	alength = area.value.length;
	if(alength > 1000){
		area.value = area.value.substr(0,1000);
		document.getElementById('cislo').innerHTML="max";
		document.getElementById('cislo').style.color="red";
	} else {
		document.getElementById('cislo').innerHTML=alength;
		document.getElementById('cislo').style.color="black";
	}
	if(alength >= 1) {
		document.getElementById('enter').disabled = "";
	} else {
		document.getElementById('enter').disabled = "disabled";
	}
	
}




function overPrazdnePole( Pole, Zprava ) {
if( Pole.value =="" ) {
        if(document.getElementById) {
		Upozorneni(Pole,Zprava,"");
        } else {
            	alert(Zprava);
        }
        return false;
    } else {
        return true;
    }
}
function Upozorneni(Pole,Hlaska,puvodniHodnota){
	Pole.style.color="red";
	Pole.value=Hlaska;
	setTimeout("SkryjUpozorneni('"+Pole.name+"','"+puvodniHodnota+"')",1000);
}
function SkryjUpozorneni(Pole,puvodniHodnota){
	document.getElementById(Pole).style.color="black";
	document.getElementById(Pole).style.textalign="left";
	document.getElementById(Pole).value=puvodniHodnota;
	document.getElementById(Pole).focus();
}

function overeniFormulare(){
  if(!overPrazdnePole(document.getElementById('toj'),"Nutno zadat jméno")) return false;
	if(!overEmail(document.getElementById('toe')))return false;
	if(!overPrazdnePole(document.getElementById('tpj'),"Nutno zadat jméno")) return false;
	if(!overEmail(document.getElementById('tpe')))return false;
	return true;
}
function overEmailovouAdresu(adresa)
{
  var filtr = /^([_a-z0-9+\-][_a-z0-9\.%+\-]*@((?:[a-z0-9\-]+\.)+(?:[a-z]{2,4}|museum)))+$/;
  var vysledek = filtr.test(adresa);
  return (vysledek);
}
function overEmail(txtEmail)
{
  if (txtEmail.value == ""  || txtEmail.value == "zde@existujici.email")
  {
    Upozorneni(txtEmail,"Nutno vyplnit adresu",txtEmail.value);  
    txtEmail.focus();
    return (false);
  }
  if (txtEmail.value.length > 40)
  {
    Upozorneni(txtEmail,"Přílią dlouhá adresa",txtEmail.value);
    txtEmail.focus();
    return (false);
  }
  if (!overEmailovouAdresu(txtEmail.value))
  {
    Upozorneni(txtEmail,"Není platná adresa",txtEmail.value);
    txtEmail.focus();
    return (false);
  }
  return (true);
}

// kontrola znaku v inputu

function getkey(e)
{
  var code;
  if (!e)
    var e = window.event; // nastaveni pro IE
  if (e.keyCode)
    code = e.keyCode; // IE a Mozilla
  else
    if (e.which)
      code = e.which; // NN4
  return code;
}

function numeric(eX)
{
  test=getkey(eX);
  if (test<48 || test>57)
    return false;
}

function znamka(eX)
{
  test=getkey(eX);
  if (test<48 || test>57 || test==45)
    return false;
}


function alfanumeric(eX,diacritic)
{
  test=getkey(eX);
  set1=(test>32 && test<48);
  set2=(test>57 && test<65);
  set3=(test>90 && test<97);
  if (diacritic == 1)
    set4=(test>122 && test<127);
  else
    set4=(test>122)
  if (set1 || set2 || set3 || set4)
    return false;
}

function safechars(eX)
{
  test=getkey(eX);
  if (test==34 || test==39)
    return false;
}