function sirka (submenu)
    {
      height=submenu*128;
      submenu="main_menu_sub_"+submenu;
      //height=document.getElementById('main_menu').offsetHeight;      
      objekt=document.getElementById(submenu);
      //if (document.all) height+=3;
      objekt.style.width=height+"px";
      //objekt.style.height="100px";
    }


function o_sub (co,obr)
  {  
  objekt=document.getElementById("submenu_"+co);
  objekt.style.display='block';
  //klik_image(co,obr);
  }

function c_sub (co,obr)
  {  
  objekt=document.getElementById("submenu_"+co);
  objekt.style.display='none';
  //noklik_image(co,obr);
  }

function klik_image(co,obr)
  {
  //objekt=document.getElementById("menu_"+co); 
  //  objekt.src="imag/"+obr+"_k.gif";  
  //objekt.style.cursor="pointer";
  }

function noklik_image(co,obr)
  {
  //objekt=document.getElementById("menu_"+co);
  //if(co!=3){
  //  objekt.src="imag/"+obr+".gif";
  //}
  //objekt.style.cursor="auto";
  }

function NewWin (Img, W, H){
var Browser = navigator.appName;
var Version = parseInt(navigator.appVersion);
if ((Browser == "Netscape" & Version >= 4) ||
(Browser == "Microsoft Internet Explorer" & Version >= 4)){
ScrH = screen.height;
ScrW = screen.width;
} else {
ScrH = 0;
ScrW = 0;
}
var BorderW = 1;
        W += 2*BorderW;
        H += 2*BorderW;

        var Position;
        if ((ScrH > 0) && (ScrW > 0))
          Position = ",left="+(ScrW - W)/2+",top="+(ScrH-H)/2;
        else
          Position = "";

        // Vytvo&#345;ení nového okna
        var NewWin = window.open("", "Fotografie",
          "toolbar=no,location=no,width="+W+",height="+H+
          ",directories=no,status=no,menubar=no,"+
          "resizable=no,scrollbars=no"+
          Position);

        // Napln&#283;ní - zapsání zdrojového kódu nového okna
        with (NewWin.document){
          write("<HTML><HEAD><TITLE>Foto - kliknutím zav&#345;ete"+
                "</TITLE></HEAD>");
          write('<BODY BgColor="black" Text="white"'+
                ' TopMargin="0" LeftMargin="0">');
          write('<A Href="javascript:close();"><IMG Src="'+Img+
                '" HSpace="'+BorderW+'" VSpace="'+BorderW+'" Border="0"></A>');
          write("</BODY></HTML>");
          close();
        }
}

