var used='';

function CheckLogin(f){
   if(f.login.value==''){
      alert('Ââåäèòå ëîãèí!');
      f.login.focus();
      return false; 
   }
   if(f.password.value==''){
      alert('Ââåäèòå ïàðîëü!');
      f.password.focus();
      return false; 
   }
   return true;
}

function CheckSearchForm(f){
   if(f.text.value==''){
      alert('Ââåäèòå ïîèñêîâûé çàïðîñ!');
      f.text.focus();
      return false; 
   }
   return true;
}

function ShowMods(id){
   var s=document.getElementById(id).style,v=s.display;
   if(v=='none'){
      s.display='block';
   }else{
      s.display='none';
   }
}

function ChangePageNum(){
   var f = document.pagefrm;
   f.submit();
}

// Èçìíåíèå ðàçìåðàâ textarea
// cmd (1 - óâåëè÷èòü, 2 - óìåíüøèòü)
// direction (1 - øòðèíà, 2 - âûñîòà, 3 - îáà)
// obj - îáúåêò
function FrmChangeSize(cmd, direction, obj, step, minw, maxw, minh, maxh)
{
   if(!(cmd==1 || cmd==2)) return false;
   if(!(direction==1 || direction==2 || direction==3) ) return false;
   if(!step) step=50;
   if(!minh || !minw || !maxh || !maxw) return false;
   var obj = document.getElementById(obj);
   if(!obj) return false;

   var w=parseInt(obj.style.width);
   var h=parseInt(obj.style.height);

   if(cmd==1)
   {
      if( (direction == 1) || (direction == 3) )
      {
         if( (w + step) <= maxw ) w = w + step;
      }
      if( (direction == 2) || (direction == 3) )
      {
         if( (h + step) <= maxh ) h = h + step;
      }
   }

   if(cmd==2)
   {
      if( (direction == 1) || (direction == 3) )
      {
         if( (w - step) >= minw ) w = w - step;
      }
      if( (direction == 2) || (direction == 3) )
      {
         if( (h - step) >= minh ) h = h - step;
      }
   }

   obj.style.width = w+'px';
   obj.style.height = h+'px';
}

function getCookie(Name){
    var search = Name + "=";
    if (document.cookie.length > 0) {
        offset = document.cookie.indexOf(search);
        if (offset != -1) {
            offset += search.length;
            end = document.cookie.indexOf(";", offset);
            if (end == -1) { end = document.cookie.length; }
            return unescape(document.cookie.substring(offset, end));
        }
    }
    return null;
}

function Show_sub(va) {
    eval (va+".className='submenu v'");
}
function Hide_sub(va) {
    eval (va+".className='h'");
}

function Showhide(va) {
    eval ("vas="+va+".className");
    if (vas=='h') {
            eval (va+".className='v'");
    } else {
            eval (va+".className='h'");
    }
}