function reloadCategories(city) {
  setPreloader($('savaitgalis_lt_block'), $('preloader_div'));
  new Ajax.Request('lt/,jx.1,city.' + city, {
    method: 'get',
    onSuccess: function(transport) {
      $('s_categories').innerHTML = transport.responseText;
    },
    onComplete: function() {
      hidePreloader($('preloader_div'));
    }
  });
}

function getX(obj) {
  var curleft = 0;

  if (obj.offsetParent) {
    do {
      curleft += obj.offsetLeft;
    } while (obj = obj.offsetParent);
  }
  return curleft;
}

function getY(obj) {
  var curtop = 0;

  if (obj.offsetParent) {
    do {
      curtop += obj.offsetTop;
    } while (obj = obj.offsetParent);
  }
  return curtop;
}

function setPreloader(src, dest) {
  Element.setStyle(dest, {
        'width': Element.getWidth(src) + 'px',
        'height': Element.getHeight(src) + 'px',
        'top': getY(src)  + 'px',
        'left': (getX(src)) + 'px',
        'overflow': 'visible',
        'z-index': '1',
        'position': 'absolute'
      });
  
  dest.style.display = '';
}

function hidePreloader(dest) {
  dest.style.display = 'none';  
}

function _(title) {
  return document.getElementById(title);
}

function changeStatus(id) {
  img_name    = 'img_' + id;
  answer_name = 'answer_' + id;
  
  if (_(answer_name).style.display == 'none') { 
    _(img_name).src = 'images/minus.gif';
    _(answer_name).style.display = 'block';
  } else {
    _(img_name).src = 'images/plus.gif';
    _(answer_name).style.display = 'none';
  }
}

function showSubmenu(id) {
  return;
  for(var i=1; i<=7; i++) {
    sub_name  = 'nauja' + i;
    menu_name = 'menu'  + i;
    
    if(i == id) {
      _(sub_name).style.display = 'block';
      _(menu_name).className = 'active';
    } else {
      _(sub_name).style.display = 'hidden';
      _(menu_name).className = '';  
    }
  }
}

function cm (mail) {  
  if (cm2(_('sub_email').value) === true) {
    return true;
  } else {
    _('sub_email').className       = 'error tf2';
    //_('alre').style.display        = 'none';
    //_('alre').style.height         = '0px';
    _('wrong_email').style.display = '';
    return false;
  }
}

function cm2 (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
   characters.  We don't want to allow special characters in the address. 
   These characters include ( ) < > @ , ; : \ " . [ ]    */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a 
   username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
   which case, there are no rules about which characters are allowed
   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
   is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
   e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
   domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


/* Finally, let's start trying to figure out if the supplied address is
   valid. */

/* Begin with the coarse pattern to simply break up user@domain into
   different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat)
if (matchArray==null) {
  /* Too many/few @'s or something; basically, this address doesn't
     even fit the general mould of a valid e-mail address. */
  //alert("Email address seems incorrect (check @ and .'s)")
  return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    //alert("The username doesn't seem to be valid.")
    return false
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
   host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
    for (var i=1;i<=4;i++) {
      if (IPArray[i]>255) {
          //alert("Destination IP address is invalid!")
    return false
      }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
  //alert("The domain name doesn't seem to be valid.")
    return false;
}

/* domain name seems valid, but now make sure that it ends in a
   three-letter word (like com, edu, gov) or a two-letter word,
   representing country (uk, nl), and that there's a hostname preceding 
   the domain or country. */

/* Now we need to break up the domain to get a count of how many atoms
   it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   // the address must end in a two letter or three letter word.
   //alert("The address must end in a three-letter domain, or two letter country.")
   return false;
}

if (len<2) {
   //var errStr="This address is missing a hostname!"
   return false;
}
return true;
}

function setHome() {
  if (document.all) {
    document.body.style.behavior='url(#default#homepage)';
    document.body.setHomePage('http://www.panele.lt/');
  } else if (window.sidebar) {
    if(window.netscape) {
      try {
        netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
      } catch(e) {
        alert("Jūsų naršyklės nustatymai neleidžia atlikti šio veiksmo. Norint pakeisti nustatymus, adreso eilutėje įrašykite \"about:config\" ir pakeiskite reikšmę \"signed.applets.codebase_principal_support\" į \"true\"");
      }
    }
    var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components. interfaces.nsIPrefBranch);
    prefs.setCharPref('browser.startup.homepage', 'http://www.panele.lt/');
  }
}