// formular zakaze stisk Enter
// pouziti: onkeypress="return disablePressEnter(event);"
function disablePressEnter(event) {
	var evt = (evt) ? evt : ((event) ? event : null); 
   var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null); 
   if ((evt.keyCode == 13) && (node.type=="text"))  {return false;} 
}

function to_clipboard(copytext)
//Inspirace: http://www.krikkit.net/howto_javascript_copy_clipboard.html
{
	if (window.clipboardData)
	{
		window.clipboardData.setData("Text", copytext);
	}
	else if (window.netscape)
	{
		try
		{
			netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
		}
		catch (e)
		{
			alert(e);
			alert("V 'about:config' nastav 'signed.applets.codebase_principal_support' na 'true'");
			return false;
		}
		var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
		if (!clip) return;
		var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
		if (!trans) return;
		trans.addDataFlavor('text/unicode');
		var str = new Object();
		var len = new Object();
		var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
		str.data=copytext;
		trans.setTransferData("text/unicode",str,copytext.length*2);
		var clipid=Components.interfaces.nsIClipboard;
		if (!clip) return false;
		clip.setData(trans,null,clipid.kGlobalClipboard);
	}
	return true;
}

function from_clipboard()
{
	//Inspirace: http://www.xulplanet.com/tutorials/xultu/clipboard.html
	var pastetext;
	if (window.clipboardData)
	{
		pastetext = window.clipboardData.getData("Text")
	}
	else if (window.netscape)
	{
		try
		{
			netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
		}
		catch (e)
		{
			alert(e);
			alert("V 'about:config' nastav 'signed.applets.codebase_principal_support' na 'true'");
			return false;
		}
		var clip = Components.classes["@mozilla.org/widget/clipboard;1"].getService(Components.interfaces.nsIClipboard);
		if (!clip) return false;
		var trans = Components.classes["@mozilla.org/widget/transferable;1"].createInstance(Components.interfaces.nsITransferable);
		if (!trans) return false;
		trans.addDataFlavor("text/unicode");

		clip.getData(trans,clip.kGlobalClipboard);

		var str = new Object();
		var strLength = new Object();

		trans.getTransferData("text/unicode",str,strLength);

		if (str) str = str.value.QueryInterface(Components.interfaces.nsISupportsString);
		if (str) pastetext = str.data.substring(0,strLength.value / 2);
	}
	return pastetext;
}
			
// pokud nebude mit prvek hodnotu, pak se skryje jiny prvek.. jinak se zobrazi
function showHideByFormValue(inputId, targetId)
{
	if (document.getElementById(inputId).value == "")
	{
		setClass(targetId, "display_none");
	}
	else
	{
		setClass(targetId, "display_default");
	}
}

function setClass(objId, newClassName) {
	document.getElementById(objId).className = newClassName;
}

function setStyle(objId, styleCss, valueCss) {
	document.getElementById(objId).style[styleCss] = valueCss;
}


//// počítání napsaných, nebo zbyvajicich znaku
//if numChars is 0, functions return num of char, else returns num chars remains
//if idReturn is null, functions returs value
function counterText(id, numChars, idReturn, endText) {

	var countObj = document.getElementById(id);
	var napsane_znaky = countObj.value.length;
	var delka_textu = napsane_znaky;

	if (numChars == 0) {
		if (idReturn == null) {
			return (delka_textu + endText);
		}
		else
		{
			document.getElementById(idReturn).value = zbyvajici_znaky + endText;
		}
	}
	else {
		var maxdelka = numChars;
		var zbyvajici_znaky = maxdelka - delka_textu;

		//F.sb.disabled=(char_in==0);
		if (zbyvajici_znaky < 0) {
			//textAlert = "Nadpis může obsahovat maximálně " + maxdelka + " znaků";
			textAlert = "Nadpis může obsahovat maximálně " + maxdelka + " znaků";
			alert(textAlert);
			countObj.value = countObj.value.substring(0, maxdelka);
			napsane_znaky = maxdelka;
			delka_textu = napsane_znaky;
			zbyvajici_znaky = 0;
		}

		if (idReturn == null) {
			return (zbyvajici_znaky + endText);
		}
		else
		{
			document.getElementById(idReturn).value = zbyvajici_znaky + endText;
		}

	}
}

// Dotaz na potvrzeni
function askConfirm(hlaska,url) {
	if (confirm(hlaska)) {
		loadingOn();
		maskOn();
		return location.href = url;
	}
}

// Dotaz na potvrzeni
function askConfirmEval(hlaska, evalFunction) {
	if (confirm(hlaska)) {
		loadingOn();
		maskOn();
		evalFunction(evalFunction);
	}
}

// <input name="OK" type="submit" onclick="return askConfirmSubmit('{text}');" id="OK" value="OK" />
function askConfirmSubmit(hlaska) {
	if (confirm(hlaska)) {
		loadingOn();
		maskOn();
		return true ;
	}
	else return false ;
}

// <input name="OK" type="submit" onclick="askConfirmSubmitByElement('{text}', {form});" id="OK" value="OK" />
function askConfirmSubmitByElement(hlaska, form) {
	if (confirm(hlaska)) {
		loadingOn();
		maskOn();
		form.submit() ;
	}
	else return false ;
}

// Dotaz pro zadani hodnoty
function myPrompt(text, url, defaultValue) {
	returned = prompt(text, defaultValue);

	if (returned != null && returned != "") {
		loadingOn();
		maskOn();
		return location.href = url + returned;
	}
}

// vyplneni hesla do textboxu
function fillPassword(id_textbox1, id_textbox2)
{
	// 6 znaku a povoleny pouze mala pismena a cisla
	var heslo = getPassword(6, false, true, true, false, false, true, true, false, false);

	document.getElementById(id_textbox1).value = heslo;

	if (id_textbox2 != "")
		document.getElementById(id_textbox2).value = heslo;

	alert("Náhodné heslo bylo nastaveno...");
}

// Generovani hesla
function getPassword(length, extraChars, firstNumber, firstLower, firstUpper, firstOther,
	latterNumber, latterLower, latterUpper, latterOther) {
	var rc = "";
	if (length > 0)
		rc = rc + getRandomChar(firstNumber, firstLower, firstUpper, firstOther, extraChars);
	for (var idx = 1; idx < length; ++idx) {
		rc = rc + getRandomChar(latterNumber, latterLower, latterUpper, latterOther, extraChars);
	}
	return rc;
}
function getRandomNum(lbound, ubound) {
	return (Math.floor(Math.random() * (ubound - lbound)) + lbound);
}
function getRandomChar(number, lower, upper, other, extra) {
	var numberChars = "0123456789";
	var lowerChars = "abcdefghijklmnopqrstuvwxyz";
	var upperChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	var otherChars = "`~!@#$%^&*()-_=+[{]}\\|;:'\",<.>/? ";
	var charSet = extra;
	if (number == true)
		charSet += numberChars;
	if (lower == true)
		charSet += lowerChars;
	if (upper == true)
		charSet += upperChars;
	if (other == true)
		charSet += otherChars;
	return charSet.charAt(getRandomNum(0, charSet.length));
}

// prace s jednim check boxem
function setCheckbox(the_form, do_check, basename)
{
	if (typeof(document.forms[the_form].elements[basename]) != 'undefined') {
		document.forms[the_form].elements[basename].checked = do_check;
	}

	return true;
}


// posledni unchecked checkbox provede neco jinemu checkboxu
function lastCheckbox(the_form, basecheck, do_check, targetcheck)
{
	var ukazatel = 0;

	/*
    var elts      = (typeof(document.forms[the_form].elements['selected_db[]']) != 'undefined')
                  ? document.forms[the_form].elements['selected_db[]']
                  : (typeof(document.forms[the_form].elements[basecheck]) != 'undefined')
          ? document.forms[the_form].elements[basecheck]
          : document.forms[the_form].elements['selected_fld[]'];
    var elts_cnt  = (typeof(elts.length) != 'undefined')
                  ? elts.length
                  : 0;
*/

	var elts      = document.forms[the_form].elements[basecheck];
	var elts_cnt  = (typeof(elts.length) != 'undefined')
	? elts.length
	: 0;

	if (elts_cnt)
	{
		for (var i = 0; i < elts_cnt; i++)
		{
			if (elts[i].checked == true)
			{
				ukazatel = 1;
			}
		}
	}

	if (elts.checked == true)
	{
		ukazatel = 1;
	}

	if (ukazatel == 0)
	{
		document.forms[the_form].elements[targetcheck].checked = do_check;
	}

	return true;
}


// vsechny check boxy v urcitem formulari
function setAllCheckBoxes(FormName, CheckValue, FieldName)
{
	if(!document.forms[FormName])
		return;
	var objCheckBoxes = document.forms[FormName].elements[FieldName];
	if(!objCheckBoxes)
		return;
	var countCheckBoxes = objCheckBoxes.length;
	if(!countCheckBoxes)
		objCheckBoxes.checked = CheckValue;
	else
		// set the check value for all check boxes
		for(var i = 0; i < countCheckBoxes; i++)
			objCheckBoxes[i].checked = CheckValue;
}


// formular povoli pouze psani cisel
// pouziti: onkeypress="return onKeyPressBlockChars(event);"
// neni funkcni v Opere
function onKeyPressBlockChars(event)
{
	//verify for netscape/mozilla
	var isNS4 = (navigator.appName=="Netscape")?1:0;

	var unicode=event.keyCode? event.keyCode : event.charCode

//	alert(unicode);

	// povoleno zpetne lomitko, tabulator, enter, ",", "."
	if (unicode != 8 && unicode != 9 && unicode != 13 && unicode != 44 && unicode != 46)
	{
		if(!isNS4)
		{
			if(unicode < 48 || unicode > 57) event.returnValue = false;
		}
		else
		{
			if(unicode < 48 || unicode > 57) return false;
		}
	}
}

// sort czech array
// dataArray = czechSort(dataArray);
var _chars = ' aáäaaâbcćčdďeéěëeefghhiíiiîjklĺľmnńňnoóôooöőpqrŕřsśštťuúuůüuuvwxyýzźž0123456789'.toUpperCase();
function czechSort(arr) {
    var map = {};
    var index;

    for (var i = 0, item; i < arr.length; i++) { //pro každý prvek
        index = []; //reset indexu
        item = arr[i];
        item.replace("/\s+/g", " ");
        for (var j = 0, ch, pos; j < item.length; j++) {
            ch = item.substr(j, 1).toUpperCase();
            //test na ch
            if (j + 1 < item.length && ch == "C" && item.substr(j + 1, 1).toUpperCase() == "H") {
                pos = 22; //ch je na pozici 22
                j++;
            } else { //zjistíme správnou pozici písmene
                pos = _chars.indexOf(ch);
            }

            index.push(pos < 10? "0" + pos : pos); //potřebujeme 0 prefix
        }
        //uložíme index prvku do mapy
        map[item] = index.join("");
    }

    //nyní sortujeme podle nalezených indexů
    return arr.sort(function(a, b) {
        //získáme indexy
        var a2 = map[a];
        var b2 = map[b];

        if (a2 > b2) { return 1;}
        if (a2 < b2) { return -1;}
        return 0;
    });
}

// skryvani a zobrazeni polozek, pokud je skryta, zobrazi ji a naopak
function showHideAuto(id) {
	state = (document.getElementById(id).style.display=='' ? 0 : 1);
//	alert(document.getElementById(id).style.display);
	document.getElementById(id).style.display = (state ? '' : 'none');
}

// skryje, nebo zobrazi polozku (false, true)
function showHide(id, show) {
	document.getElementById(id).style.display = (show ? '' : 'none');
}

// skryvani a zobrazeni polozek, posledni skryje a novou zobrazi
var xr = new Array(0,0,0,0);
function bclick(c, r) {
	if (xr[c] != r) {
		b_deactivate(c, xr[c]);
		b_activate(c, r);
	}
}
function b_activate(c, r) {
	state = (document.getElementById('id' + c + 'a' + r).style.display=='' ? 0 : 1);
	document.getElementById('id' + c + 'a' + r).style.display = (state ? '' : 'none');
	xr[c] = r;
}
function b_deactivate(c, r) {
	state = (document.getElementById('id' + c + 'a' + r).style.display=='' ? 0 : 1);
	document.getElementById('id' + c + 'a' + r).style.display = (state ? '' : 'none');
}

// zmena obrazku na mouse over
/** pouziti
<body onload="MM_preloadImages('pics/bt_profil_.gif','pics/bt_produkty_.gif','pics/bt_kontakty_.gif')">

<a href="profil.php" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('bt_profil1','','pics/bt_profil_.gif',1)"><img src="pics/bt_profil.gif" alt="Profil" name="bt_profil1" width="126" height="20" border="0" id="bt_profil1" /></a>
 */
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];
	}
}

//////

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
	if (init==true) with (navigator) {
		if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
			document.MM_pgW=innerWidth;
			document.MM_pgH=innerHeight;
			onresize=MM_reloadPage;
		}
	}
else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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_showHideLayers() { //v6.0
	var i,p,v,obj,args=MM_showHideLayers.arguments;
	for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) {
		v=args[i+2];
		if (obj.style) {
			obj=obj.style;
			v=(v=='show')?'visible':(v=='hide')?'hidden':v;
		}
		obj.visibility=v;
	}
}


function cell_rollover(cell, classname) {
	if (document.all || document.getElementById) {
		cell.classBackup = cell.className;
		cell.className   = classname;
	}
}

function cell_rollout(cell)
{
	if (document.all || document.getElementById) {
		cell.className   = cell.classBackup;
	}
}


///// pouze zkusebni

function setPointer(theRow, theRowNum, theAction, theDefaultColor, thePointerColor, theMarkColor)
{
	var theCells = null;

	// 1. Pointer and mark feature are disabled or the browser can't get the
	//    row -> exits
	if ((thePointerColor == '' && theMarkColor == '')
		|| typeof(theRow.style) == 'undefined') {
		return false;
	}

	// 2. Gets the current row and exits if the browser can't get it
	if (typeof(document.getElementsByTagName) != 'undefined') {
		theCells = theRow.getElementsByTagName('td');
	}
	else if (typeof(theRow.cells) != 'undefined') {
		theCells = theRow.cells;
	}
	else {
		return false;
	}

	// 3. Gets the current color...
	var rowCellsCnt  = theCells.length;
	var domDetect    = null;
	var currentColor = null;
	var newColor     = null;
	// 3.1 ... with DOM compatible browsers except Opera that does not return
	//         valid values with "getAttribute"
	if (typeof(window.opera) == 'undefined'
		&& typeof(theCells[0].getAttribute) != 'undefined') {
		currentClassName = theCells[0].className;
		domDetect    = true;
	}
	// 3.2 ... with other browsers
	else {
		currentClassName = theCells[0].className;
		domDetect    = false;
	} // end 3

	// 4. Defines the new color
	// 4.1 Current color is the default one
	if (currentColor == ''
		|| currentColor.toLowerCase() == theDefaultColor.toLowerCase()) {
		if (theAction == 'over' && thePointerColor != '') {
			newColor              = thePointerColor;
		}
		else if (theAction == 'click' && theMarkColor != '') {
			newColor              = theMarkColor;
			marked_row[theRowNum] = true;
		}
	}
	// 4.1.2 Current color is the pointer one
	else if (currentColor.toLowerCase() == thePointerColor.toLowerCase()
		&& (typeof(marked_row[theRowNum]) == 'undefined' || !marked_row[theRowNum])) {
		if (theAction == 'out') {
			newColor              = theDefaultColor;
		}
		else if (theAction == 'click' && theMarkColor != '') {
			newColor              = theMarkColor;
			marked_row[theRowNum] = true;
		}
	}
	// 4.1.3 Current color is the marker one
	else if (currentColor.toLowerCase() == theMarkColor.toLowerCase()) {
		if (theAction == 'click') {
			newColor              = (thePointerColor != '')
			? thePointerColor
			: theDefaultColor;
			marked_row[theRowNum] = (typeof(marked_row[theRowNum]) == 'undefined' || !marked_row[theRowNum])
			? true
			: null;
		}
	} // end 4

	// 5. Sets the new color...
	if (newColor) {
		var c = null;
		// 5.1 ... with DOM compatible browsers except Opera
		if (domDetect) {
			for (c = 0; c < rowCellsCnt; c++) {
				theCells[c].ClassName = newColor;
			} // end for
		}
		// 5.2 ... with other browsers
		else {
			for (c = 0; c < rowCellsCnt; c++) {
				theCells[c].ClassName = newColor;
			}
		}
	} // end 5

	return true;
}