function nacist_obr() {
 var NazvyBmp = new Array("dot");
 var PoleBmp = new Array();
 var Obr = '';
 for (var i=0; i<NazvyBmp.length; i++) {
  Obr = NazvyBmp[i] + ".bmp";
  PoleBmp[i] = new Image();
  PoleBmp[i].src = Obr;
  }
 var NazvyJpg = new Array("cen","fan");
 var PoleJpg = new Array();
 for (var i=0; i<NazvyJpg.length; i++) {
  Obr = NazvyJpg[i] + ".jpg";
  PoleJpg[i] = new Image();
  PoleJpg[i].src = Obr;
  } 
 var NazvyGif = new Array("graf","0","1","2","3","4","5","6","7","8","9","top_z","bot_z","top_o","bot_o","top_t","bot_t","top_gz","bot_gz");
 var PoleGif = new Array();
 for (var i=0; i<NazvyGif.length; i++) {
  Obr = NazvyGif[i] + ".gif";
  PoleGif[i] = new Image();
  PoleGif[i].src = Obr;
  }  
 }
 
function obr_klik(obr,w,h){
 window.open('obrazek.php?obr='+obr,'','status=no,width='+(w+10)+',height='+(h+10)+',toolbar=no');
 }
 
function graf(id,z){
 window.open('graf.php?id='+id+'&z='+z,'','height=480,width=640,scrollbars=yes,resizable=yes');
}  	

function web(adresa){
 window.open(adresa,'','');
}

function kosik(id,z){
 window.open('kosik.php?id='+id+'&z='+z,'','height=480,width=640,scrollbars=yes,resizable=yes');
}

function kosik_detail(poradi){
// window.open('kosik_detail.php?p='+poradi,'','height=480,width=640,scrollbars=yes,resizable=yes');
 document.getElementById("f_komp").submit();
}


function historie(){
 window.open('historie.php','','height=400,width=640,scrollbars=yes,resizable=yes');
}  	

function historie_kosik(){
 window.open('historie_kosik.php','','height=400,width=640,scrollbars=yes,resizable=yes');
}

function zmena_DPH(bez,id){
 var pos = document.cookie.indexOf("bez_DPH=");
 var zac = pos + 8;
 var kon = document.cookie.indexOf(";", zac);
 if (kon == -1) {kon = document.cookie.length;}
 var cislo = document.cookie.substring(zac,kon);
 if (cislo != bez) { 	
  document.cookie = "bez_DPH=" + bez;
  document.location = 'index.php?id='+id;
  }
}  

function zmena_menu(cis,id){
 var pos = document.cookie.indexOf("men_akt=");
 var zac = pos + 8;
 var kon = document.cookie.indexOf(";", zac);
 if (kon == -1) {kon = document.cookie.length;}
 var cislo = document.cookie.substring(zac,kon);
 //alert(cislo+' '+cis);
 if (cislo != cis) {
  document.cookie = "men_akt="+cis;
 // alert(document.cookie);
  if (id<5000) {document.location = 'index.php?id='+id;}
  }
}

function zal_klik(id,z){
 document.location = 'graf.php?id='+id+'&z='+z;
} 

function zal_klik_kos(id,z){
 document.location = 'kosik.php?id='+id+'&z='+z;
} 

function zobraz_stranku(){
 document.getElementById("telo").style.visibility = "visible";
 document.getElementById("strpeni").style.visibility = "hidden"; // aby nebyl videt napis "chvilku strpeni"
} 

function zobraz_stranku_g(){
 document.getElementById("telo_g").style.visibility = "visible";
 document.getElementById("strpeni").style.visibility = "hidden"; // aby nebyl videt napis "chvilku strpeni"
}