if (navigator.userAgent.indexOf('Firefox') !=-1)
{
 document.write('<link rel="stylesheet" type="text/css" href="exter/styl_ff.css" />');
}

function aktivuj_spotrebny() {
document.getElementById("menu_parametre").style.height="20px";
document.getElementById("menu_parametre").style.borderBottom="1px solid #8E8E8E";
document.getElementById("menu_spotrebny_material").style.borderBottom="1px solid #DDDDDD";
document.getElementById("menu_spotrebny_material").style.height="25px";
document.getElementById("zobrazovac").innerHTML=document.getElementById("div_spotrebny_material").innerHTML;
}

function aktivuj_parametre() {
document.getElementById("menu_spotrebny_material").style.height="20px";
document.getElementById("menu_spotrebny_material").style.borderBottom="1px solid #8E8E8E";
document.getElementById("menu_parametre").style.borderBottom="1px solid #DDDDDD";
document.getElementById("menu_parametre").style.height="25px";
document.getElementById("zobrazovac").innerHTML=document.getElementById("div_parametre").innerHTML;
}