var a=0;
var b=0;
function loadDiv(div_name)
{
    if(document.getElementById(div_name)) document.getElementById(div_name).style.display='block';
    if(document.getElementById(div_name+'_menu')) document.getElementById(div_name+'_menu').className='menu_aktywny';
}

function unloadDiv(div_name)
{

        if(document.getElementById(div_name)) document.getElementById(div_name).style.display='none';
        if(document.getElementById(div_name+'_menu')) document.getElementById(div_name+'_menu').className='';
}

function unloadDiv1(div_name)
{
        //if(document.getElementById(div_name)){  var t=setTimeout("unloadDiv1a('"+div_name+"');",200);}
        if(document.getElementById(div_name)){ document.getElementById(div_name).style.display='none';}
}

function unloadDiv1a(div_name)
{
        if(document.getElementById(div_name)){ document.getElementById(div_name).style.display='none';}
}