function zamen(nazev_obr,novy_obr) 
{
  document.images[nazev_obr].src=novy_obr; }

function zm1( ) 
{ window.open("../BOCNI/Home.htm","menubok");
  document.s1.src="OBR/Sipka1.gif";
  document.s2.src="OBR/Sipka2a.gif";
  document.s3.src="OBR/Sipka3a.gif";
  document.s4.src="OBR/Sipka4a.gif";
  document.s5.src="OBR/Sipka5a.gif";
  focus(); }


function zm2( ) 
{
  document.s1.src="OBR/Sipka1a.gif";
  document.s2.src="OBR/Sipka2.gif";
  document.s3.src="OBR/Sipka3a.gif";
  document.s4.src="OBR/Sipka4a.gif";
  document.s5.src="OBR/Sipka5a.gif";
  focus(); }

function zm3( ) 
{  window.open("../BOCNI/Home.htm","menubok");
  document.s1.src="OBR/Sipka1a.gif";
  document.s2.src="OBR/Sipka2a.gif";
  document.s3.src="OBR/Sipka3.gif";
  document.s4.src="OBR/Sipka4a.gif";
  document.s5.src="OBR/Sipka5a.gif";
  focus(); }

function zm4( ) 
{  window.open("../BOCNI/Home.htm","menubok");
  document.s1.src="OBR/Sipka1a.gif";
  document.s2.src="OBR/Sipka2a.gif";
  document.s3.src="OBR/Sipka3a.gif";
  document.s4.src="OBR/Sipka4.gif";
  document.s5.src="OBR/Sipka5a.gif";
  focus(); }

function zm5( ) 
{ window.open("../BOCNI/Home.htm","menubok");
  document.s1.src="OBR/Sipka1a.gif";
  document.s2.src="OBR/Sipka2a.gif";
  document.s3.src="OBR/Sipka3a.gif";
  document.s4.src="OBR/Sipka4a.gif";
  document.s5.src="OBR/Sipka5.gif";
  focus(); }

function zmiz( ) 
{
  document.s1.src="OBR/Sipka1a.gif";
  document.s2.src="OBR/Sipka2a.gif";
  document.s3.src="OBR/Sipka3a.gif";
  document.s4.src="OBR/Sipka4a.gif";
  document.s5.src="OBR/Sipka5a.gif";
  window.open("../BOCNI/Home.htm","menubok");
  focus(); }