function instruct01_01()  
{
iwin = window.open("images/obr/okno01_01.htm","IWIN","status=no,toolbar=no,location=no,menu=no,width=600,height=550");
}

function nahoru() 
{ 
    if (run == 1) 
    { 
        if (menu.scrollTop > 0) 
        { 
            menu.scrollTop--; 
            window.setTimeout("nahoru()",20); 
        } 
    } 
} 
function dolu() 
{ 
    if (run == 1) 
    { 
        menu.scrollTop++; 
        window.setTimeout("dolu()",20); 
    } 
}