// ** bookmark functions

var sepchar   = "@";     
var BMtotal   = 10;         
var ShowCount = 0;
var expDays   = 30;         

var exp       = new Date();     
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

function GetTotalBookmarks()
{
        var NumBookmarks = GetCookie('PT_NumBookmarks');
     var i;
     var Bookmark;
        var count = 0;
     if (NumBookmarks == null)     
     {
      NumBookmarks = 0;
     }
         
     for (i=1; i <= NumBookmarks ; i++)
     {
      Bookmark = GetCookie('PT_Bookmark'+i);
      if (Bookmark != null)
      {
       count++;
      }
     }
     if (count == 0)     
     {
         return 0;
     }
     else
        {
         return 1;
     }
}

function ListBookmarks()
{
     var NumBookmarks = GetCookie('PT_NumBookmarks');
     var i;
     var Bookmark;

     if (NumBookmarks == null)     
     {
      NumBookmarks = 0;
     }
     ShowCount = 0; SwapColour = 0;
         
     for (i=1; i <= NumBookmarks ; i++)
     {
      Bookmark = GetCookie('PT_Bookmark'+i);
      if (Bookmark != null)
      {
       PrintBookmark(Bookmark, i);
      }
     }
}

function DeleteBookmark(Count)
{
     DeleteCookie('PT_Bookmark'+Count);
     window.location = window.location;
}

function PrintBookmark (Bookmark, Count)
{

     var color = "";
     var pairs = Bookmark.split(sepchar);
     pairs[0]= unescape(pairs[0]);
     pairs[1]= unescape(pairs[1]);
     pairs[2]= unescape(pairs[2]);
     var BMtitle = pairs[0];
     var BMaddress = pairs[1];
     var BMtitleFull = pairs[2];

     ShowCount++;
     document.write("<tr><td width=90%><a class=m href='"+BMaddress+"' title='"+BMtitleFull+"'>"+BMtitle+"</a></td>");
     document.write("<td><a href='javascript:DeleteBookmark(" + Count + ")' title='Удалить'><font color=red><b>X</b></font></a></td>");
     document.write("</tr>");
}

function AddBookmark(BMtitle, BMaddress)
{

     var NumBookmarks = GetCookie('PT_NumBookmarks');
     var i;
     var ToDoItem;
     var Bookmark;
     var OldestBookmark = 0;
     var CountBookmarks = 0;
        var new_title;
        var BMtitleFull;
            
        BMtitleFull = BMtitle;
        new_title = BMtitle.substring(0,19)+'..';
        BMtitle = new_title;

     if (NumBookmarks == null) {    NumBookmarks = 0;}
         
     // check if already exists, and count bookmarks     
     for (i=1; i <= NumBookmarks ; i++)
     {
      Bookmark = GetCookie('PT_Bookmark'+i);
      if (Bookmark != null)     
      {    CountBookmarks++;       
       if (OldestBookmark == 0)
       {    OldestBookmark = i;    }     
      }
         
      if (Bookmark == BMtitle+sepchar+BMaddress+sepchar+BMtitleFull)
      {    alert("Ссылка уже существует: "+BMtitleFull);
       return;   }
     }

     // check if limit reached
     if (CountBookmarks > BMtotal)
     {    DeleteBookmark(OldestBookmark);
     }

     // now add it
     NumBookmarks++;
     SetCookie('PT_Bookmark'+NumBookmarks, BMtitle+sepchar+BMaddress+sepchar+BMtitleFull, exp);
     SetCookie('PT_NumBookmarks',NumBookmarks, exp);
     alert("Добавлена новая ссылка: "+BMtitleFull);
}

// cookie functions

function getCookieVal (offset) {      

     var endstr = document.cookie.indexOf (";", offset);      

     if (endstr == -1)        
      endstr = document.cookie.length;      
     return unescape(document.cookie.substring(offset, endstr));

}

function GetCookie (name) {      

     var arg = name + "=";      
     var alen = arg.length;      
     var clen = document.cookie.length;      
     var i = 0;      

     while (i < clen) {        
      var j = i + alen;        
      if (document.cookie.substring(i, j) == arg)          
       return getCookieVal (j);        
      i = document.cookie.indexOf(" ", i) + 1;        
      if (i == 0) break;       
     }      
     return null;
}

function SetCookie (name, value) {      

     var argv = SetCookie.arguments;      
     var argc = SetCookie.arguments.length;      
     var expires = (argc > 2) ? argv[2] : null;      
     var path = (argc > 3) ? argv[3] : null;      
     var domain = (argc > 4) ? argv[4] : null;      
     var secure = (argc > 5) ? argv[5] : false;      

     document.cookie = name + "=" + escape (value) +     
       ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +     
       ((path == null) ? "" : ("; path=" + path)) +      
       ((domain == null) ? "" : ("; domain=" + domain)) +        
       ((secure == true) ? "; secure" : "");

}

function DeleteCookie (name) {      

     var exp = new Date();      

     exp.setTime (exp.getTime() - 1);      
     var cval = GetCookie (name);      
     document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}