// find object (what, where)
function findObj(n, d) {
  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=findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

// swaps image of <img>
function swapImage(src, image) {
  if ((x=findObj(src))!=null) {
  x.src=image;
  }
}

// set cookie (1 day = 24*60*60*1000 ms)
function setCookie(name, value, ms) {
  function getExp( d ) {
    var exp = new Date();
    exp.setTime (exp.getTime() + d);
    return '; expires=' + exp.toGMTString();
  }
  
  if (value.length == 0)
    document.cookie = name + "=" + getExp(-1000) + ";path=/";
  else
    document.cookie = name + "=" + value + getExp(ms) + ";path=/";
}

// get cookie
function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + '=';
  var begin = dc.indexOf('; ' + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) {
      return null;
    }
  } else {
    begin += 2;
  }
  var end = dc.indexOf(';', begin);
  if (end == -1) {
    end = dc.length;
  }
  return dc.substring(begin + prefix.length, end);
}

// set (-) count
function msgs_cnt() {
  var itemsCount=0;
  var msgsList = getCookie( 'msgs' );
  if( msgsList ) {
    for ( i=0; i<msgsList.length;i++ ) {
      if(msgsList.charAt(i) == '|') itemsCount++;
    }    
    msgsList = '|' + msgsList;
  } else {
    msgsList = '';
  }
}

// adds message
function msgs_add(i) {
  var list=getCookie('msgs');
  if (list==null) { list = '';}

  var found=0;
  if (list) {
    while (list.length>0) {
      entry=list.substr(0, list.indexOf('|'));
      if (entry==i) found++;
      list=list.replace(entry+'|', '');
    }
  }

  if (found==0) {
    list=getCookie('msgs');
    if (list==null) { list = '';}
    list=i+'|'+list;
    setCookie('msgs', list, 365*24*60*60*1000);
  }
  list=getCookie('msgs');
  if (list==null) { list = '';}
  msgs_cnt();
}


// clears msgs's list
function msgs_clear() {
  setCookie('msgs', '', 365*24*60*60*1000);
  msgs_cnt();
}

// add picture
function picShow(){
  document.getElementById('reply_form_pic_show').style.display = "none";
  document.getElementById('reply_form_pic_hide').style.display = "block";
}
function picHide(){
  document.getElementById('reply_form_pic_show').style.display = "block";
  document.getElementById('reply_form_pic_hide').style.display = "none";
  document.getElementById('post_pic_file').destroy();
  document.getElementById('reply_form_pic_hide').getElement('p').innerHTML = '<input type="file" id="post_pic_file" name="post_pic_file"/>';
}