function display_2level(kategoria){
       var kategoria;
 var item_1;
var item_2;
var item_3;
var item_4;
var item_5;
var item_6;
var item_7;
var item_8;
var item_12;
var item_13;
var item_15;
item_1=document.getElementById("li2_1").style.display;
            if(document.getElementById("li2_1").style.display=="block"){
               document.getElementById("li2_1").style.display="none";
               document.getElementById("tree_2_1").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_1" && item_1=="none"){
               document.getElementById("li2_1").style.display="block";
               document.getElementById("tree_2_1").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_2=document.getElementById("li2_2").style.display;
            if(document.getElementById("li2_2").style.display=="block"){
               document.getElementById("li2_2").style.display="none";
               document.getElementById("tree_2_2").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_2" && item_2=="none"){
               document.getElementById("li2_2").style.display="block";
               document.getElementById("tree_2_2").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_3=document.getElementById("li2_3").style.display;
            if(document.getElementById("li2_3").style.display=="block"){
               document.getElementById("li2_3").style.display="none";
               document.getElementById("tree_2_3").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_3" && item_3=="none"){
               document.getElementById("li2_3").style.display="block";
               document.getElementById("tree_2_3").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_4=document.getElementById("li2_4").style.display;
            if(document.getElementById("li2_4").style.display=="block"){
               document.getElementById("li2_4").style.display="none";
               document.getElementById("tree_2_4").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_4" && item_4=="none"){
               document.getElementById("li2_4").style.display="block";
               document.getElementById("tree_2_4").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_5=document.getElementById("li2_5").style.display;
            if(document.getElementById("li2_5").style.display=="block"){
               document.getElementById("li2_5").style.display="none";
               document.getElementById("tree_2_5").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_5" && item_5=="none"){
               document.getElementById("li2_5").style.display="block";
               document.getElementById("tree_2_5").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_6=document.getElementById("li2_6").style.display;
            if(document.getElementById("li2_6").style.display=="block"){
               document.getElementById("li2_6").style.display="none";
               document.getElementById("tree_2_6").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_6" && item_6=="none"){
               document.getElementById("li2_6").style.display="block";
               document.getElementById("tree_2_6").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_7=document.getElementById("li2_7").style.display;
            if(document.getElementById("li2_7").style.display=="block"){
               document.getElementById("li2_7").style.display="none";
               document.getElementById("tree_2_7").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_7" && item_7=="none"){
               document.getElementById("li2_7").style.display="block";
               document.getElementById("tree_2_7").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_8=document.getElementById("li2_8").style.display;
            if(document.getElementById("li2_8").style.display=="block"){
               document.getElementById("li2_8").style.display="none";
               document.getElementById("tree_2_8").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_8" && item_8=="none"){
               document.getElementById("li2_8").style.display="block";
               document.getElementById("tree_2_8").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_12=document.getElementById("li2_12").style.display;
            if(document.getElementById("li2_12").style.display=="block"){
               document.getElementById("li2_12").style.display="none";
               document.getElementById("tree_2_12").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_12" && item_12=="none"){
               document.getElementById("li2_12").style.display="block";
               document.getElementById("tree_2_12").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_13=document.getElementById("li2_13").style.display;
            if(document.getElementById("li2_13").style.display=="block"){
               document.getElementById("li2_13").style.display="none";
               document.getElementById("tree_2_13").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_13" && item_13=="none"){
               document.getElementById("li2_13").style.display="block";
               document.getElementById("tree_2_13").src="img_cms/img_mod_zbopen/zz_none.gif";
            }item_15=document.getElementById("li2_15").style.display;
            if(document.getElementById("li2_15").style.display=="block"){
               document.getElementById("li2_15").style.display="none";
               document.getElementById("tree_2_15").src="img_cms/img_mod_zbclose/zz_none.gif";
            }
            if ( kategoria=="li2_15" && item_15=="none"){
               document.getElementById("li2_15").style.display="block";
               document.getElementById("tree_2_15").src="img_cms/img_mod_zbopen/zz_none.gif";
            }}