function show_hide(obj, index) {
 if ($('#' + obj + ' span').is(':visible')){
  $('#' + index).removeClass('buttonh');
  $('#' + index).addClass('button');
 }
 else {
  $('#' + index).removeClass('button');
  $('#' + index).addClass('buttonh');
 }
 $('#' + obj + ' span').toggle('slow');



}

var antispam_value = "15588";
function kontrola(input,id,value) {
 if(id != check_antispam) {
   if(input.value.length == 0 && id != check_antispam) {
     document.getElementById(id).innerHTML="<img src='index/email/false.png' alt='false'>";
   }
   else {document.getElementById(id).innerHTML="<img src='index/email/true.png' alt='true'>";}
 }

 if(id == check_antispam) {
   if(value != antispam_value) {

     document.getElementById(id).innerHTML="<img src='index/email/false.png' alt='false'>";

   }
   else {document.getElementById(id).innerHTML="<img src='index/email/true.png' alt='true'>";}
 }
}

function fpreview(src2) {
 document.getElementById('preview').style.visibility = 'visible';
 document.getElementById('preview').src=src2;
}

$(document).ready(function() {
 document.getElementById('preview').style.visibility = 'hidden';
});