// JavaScript Document

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_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_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 GetObject(objName, x) { //v3.0
  var obj = MM_findObj(objName); if (obj) return obj;
}

var poc = 0;
function openNewWindow(URLtoOpen, windowName, windowFeatures) 
{ if (poc!==0) {newWindow.close();};
  newWindow=window.open(URLtoOpen, windowName, windowFeatures);
  newWindow.focus();
  poc++;
}

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; }
}

// FORM VALIDATE //

function validate_user_form() {

if (GetObject('message').value == "") { 
 alert('Zadejte, Váš komentář nebo poznámku.');
 GetObject('message').focus();
 return false;
 }

return true;
}

function validate_course_form() {

if (GetObject('fullname').value == "") { 
 alert('Prosím, zadejte Vaše celé jméno.');
 GetObject('fullname').focus();
 return false;
 }

if (GetObject('address').value == "") { 
 alert('Prosím, zadejte Vaši úplnou adresu.');
 GetObject('address').focus();
 return false;
 }

if (GetObject('phone').value == "" && GetObject('mobile').value == "") { 
 alert('Prosím, zadejte Váš kontaktní telefon.');
 GetObject('phone').focus();
 return false;
 }

if (GetObject('email').value == "") { 
 alert('Prosím, zadejte Váš kontaktní e-mail.');
 GetObject('email').focus();
 return false;
 }


GetObject('language').disabled = false;
if (GetObject('code') != undefined) GetObject('code').disabled = false;
GetObject('cycle').disabled = false;
GetObject('day').disabled = false;
GetObject('time').disabled = false;
GetObject('level').disabled = false;
GetObject('group').disabled = false;

return true;

}



function str_replace(_search, _replace, _source) {
	while (_source.replace(_search, _replace) != _source) _source = _source.replace(_search, _replace);
	return _source;
}