var DDSPEED = 10;
var DDTIMER = 15;

// main function to handle the mouse events //
function ddMenu(id,d){
  var h = document.getElementById('MHead'+id);
  var c = document.getElementById('MCont'+id);
  clearInterval(c.timer);
  if(d == 1){
    clearTimeout(h.timer);
    c.style.display = 'block';
    if(c.maxh && c.maxh <= c.offsetHeight){return}
    else if(!c.maxh){
      c.style.height = 'auto';
      c.maxh = c.offsetHeight;
      c.style.height = '0px';
    }
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }else{
    h.timer = setTimeout(function(){ddCollapse(c)},50);
  }
}

// collapse the menu //
function ddCollapse(c){
  c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}

// cancel the collapse if a user rolls over the dropdown //
function cancelHide(id){
  var h = document.getElementById('MHead'+id);
  var c = document.getElementById('MCont'+id);
  clearTimeout(h.timer);
  clearInterval(c.timer);
  if(c.offsetHeight < c.maxh){
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }
}

// incrementally expand/contract the dropdown and change the opacity //
function ddSlide(c,d){
  var currh = c.offsetHeight;
  var dist;
  if(d == 1){
    dist = (Math.round((c.maxh - currh) / DDSPEED));
  }else{
    dist = (Math.round(currh / DDSPEED));
  }
  if(dist <= 1 && d == 1){
    dist = 1;
  }
  c.style.height = currh + (dist * d) + 'px';
  c.style.opacity = currh / c.maxh;
  c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
  if(currh > (c.maxh - 2) && d == 1){
    clearInterval(c.timer);
  }else if(dist < 1 && d != 1){
    clearInterval(c.timer);
    c.style.display = 'none';
  }
}

/*
// JScript File
function favoris() {
if ( navigator.appName == 'Microsoft Internet Explorer' ){ window.external.AddFavorite("http://www.mojahedin.org/","سايت سازمان مجاهدين خلق ايران"); }
else  if (navigator.appName == "Netscape" )
{window.sidebar.addPanel(,,"");}
else if (navigator.appName=='Opera'){ alert('[CLTR] + D'); }
else { alert(' [CMD] + D'); }
return 0;
}*/
function favorites(){
var title='سايت سازمان مجاهدين خلق ايران';
var url="http://www.mojahedin.org";
if(window.sidebar) window.sidebar.addPanel(title,url,"");
else if(window.external)window.external.AddFavorite(url,title);
else if(window.opera && window.print) alert('[CLTR] + D');
else alert('[CMD] + D'); 
}