// preloaded images
function preloadImages() {
   if(document.images)
     { if(!document.pole) document.pole = new Array();
       var i,j = document.pole.length,
       a = preloadImages.arguments;
       for(i=0; i<a.length; i++)
         if (a[i].indexOf("#")!=0)
           { document.pole[j]=new Image;
             document.pole[j++].src=a[i];
           }
     }
   }

preloadImages(
  "layout/mnu1a.gif", 
  "layout/mnu2a.gif", 
  "layout/mnu3a.gif", 
  "layout/mnu4a.gif", 
  "layout/mnu5a.gif", 
  "layout/mnu6a.gif", 
  "layout/mnu7a.gif", 
  "layout/mnu8a.gif",
	
  "layout/lbmnu1a.gif", 
  "layout/lbmnu2a.gif", 
  "layout/lbmnu3a.gif", 
  "layout/lbmnu4a.gif",
  "layout/lbmnu3ena.gif",
  "layout/lbmnu4ena.gif"		 

  );

function img_on(name) {
  document.images[name].src = 'layout/'+name+'a.gif'; 
  }
  
function img_off(name) {
  document.images[name].src = 'layout/'+name+'.gif'; 
  }  
	
function openWin(url, winWidth, winHeight, winRes) {
  if (winRes == 1) { 
    stat="resizable=1,scrollbars=1";
  }
  else { 
    stat="resizable=0,scrollbars=0";
  }
  // calculate centered window position
  winLeft = Math.round((screen.width-winWidth)/2);
  winTop  = Math.round((screen.availHeight-winHeight)/2);
  winDef = "left="+winLeft+",top="+winTop+",height="+winHeight+",width="+winWidth+",directories=no,location=no,menubar=no,status=no,toolbar=no,"+stat;
  window.open(url, "", winDef);
  return true;
} 	


// JavaScript Document
/*
 * Determine which web browser we have here.
 */
 
var isIE=document.all?true:false; /* IE4, IE5, IE6 */
var isDOM=document.getElementById?true:false; /* IE6, NS6 */

function SH_tr(_objName,_formObj)
{
  if(isDOM)
  {
    if (document.getElementById(_objName).className=='skryty') {
      document.getElementById(_objName).style.display='none';
      document.getElementById(_objName).className='zvyrazni_radek'  
    }
    _formObj._show=document.getElementById(_objName).style.display=='none'?true:false;
    if(_formObj._show) {
        if (navigator.appName == 'Microsoft Internet Explorer') {
        //if (isIE) {
          document.getElementById(_objName).style.display = "block";
        }
        else {
          document.getElementById(_objName).style.display = "table-row";      
        }
      }
    else
      document.getElementById(_objName).style.display="none";
  }
}


function zobraz_podmenu_bazaru()
{
  document.getElementById("podmenu_bazaru").style.display="block";
}

function zobraz_memo (_div) 
{
  text = document.getElementById(_div).innerHTML;
  blok = document.getElementById('okno_pro_zobrazeni_popisu');
  blok.style.display="block";
  kam = document.getElementById('blok_pro_text'); 
  kam.innerHTML = text;
}
function schovej_memo()
{
  document.getElementById("okno_pro_zobrazeni_popisu").style.display="none";
}