var intervalId;
var intervalId2;
var evet = 0;
var divtag = "a";
var menucount = 6;
var opac = 0;
var sonnesne;

function ayarla(){
intervalId = setTimeout("divkapat()",1000);
}

function divkapat(){
   if (evet==1){
      for (i=1;i<=menucount;i++){
          document.getElementById(divtag+i).style.display="none";
	  }
   }
   clearTimeout(intervalId);
}

function divac(nesne){
   evet=1;
   //alert(nesne);
   if (document.getElementById(nesne).style.display != "")
   {  
      document.getElementById(nesne).style.filter="alpha(opacity=0)";
	  document.getElementById(nesne).style.opacity=0;
      opac=0; }
   divkapat();   
   document.getElementById(nesne).style.display="";  
   sonnesne = nesne;
   intervalId2 = setTimeout("artir()",10);
}

function artir(){
 if (opac <= 100)
    opac++;
 document.getElementById(sonnesne).style.filter="alpha(opacity="+opac+")";
 document.getElementById(sonnesne).style.opacity=(opac/100);
 clearTimeout(intervalId2);
 intervalId2 = setTimeout("artir()",10);
}