function show_time() {
 t=new Date();
 hours = t.getHours();
 minutes = t.getMinutes();
 seconds = t.getSeconds();
  if (hours < 10) {
   hours = '0'+hours;
  }
 
  if(minutes < 10) {
   minutes = '0'+minutes;
  }
 
  if (seconds < 10) {
   seconds = '0'+seconds;
  }   
  document.getElementById('time_span').innerHTML = hours+':'+minutes+':'+seconds;
  setTimeout('show_time()', 1000);
}

function show_detail(Image_Path, Image_Width, Image_Height){
 var top_pos, left_pos;
 
 top_pos = (screen.availHeight / 2) - ((parseInt(Image_Height) + 50) / 2);
 left_pos = (screen.availWidth / 2) - ((parseInt(Image_Width) + 30) / 2);
 
 window.open('/show_detail.php?q='+Image_Path,'detail_window','width='+(parseInt(Image_Width)+50)+',height='+(parseInt(Image_Height)+30)+',toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, copyhistory=no, resizable=no, left='+left_pos+', top='+top_pos+', screenX='+left_pos+', screenY='+top_pos);
}

function show_tech_info(Xproduct, Xset, Xtype){
 var top_pos, left_pos;
 
 if(screen.availWidth < 900){
   alert('Stránka je navrhnutá pre rozlíšenie s minimálnou šírkou obrazovky 900px. Prosím zmeňte rozlíšenie vášho monitora pretože inak sa k požadovanej stránke nedostanete!');
 }
 else {
   top_pos = (screen.availHeight / 2) - 300;
   left_pos = (screen.availWidth / 2) - 450;
 
   window.open('/tech_info.php?q='+Xproduct+'*'+Xset+'*'+Xtype,'tech_info_window','width=900, height=600, toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, copyhistory=no, resizable=no, left='+left_pos+', top='+top_pos+', screenX='+left_pos+', screenY='+top_pos);
 }   
}