var sdiak = "ÁÄČÇĎÉĚËÍŇÓÖŘŠŤÚŮÜÝŽáäčçďéěëíňóöřšťúůüýž";
var bdiak = "AACCDEEEINOORSTUUUYZaaccdeeeinoorstuuuyz";
function bezdiak(str)
{ 
  var tx='';
  var txt = str;
  for(p = 0; p < txt.length; p++)
  {
    if (sdiak.indexOf(txt.charAt(p)) != -1)
    {
      tx += bdiak.charAt(sdiak.indexOf(txt.charAt(p)));
    }
    else tx += txt.charAt(p);
  }
 return tx;
} 


var allowed = "ÁÄČÇĎÉĚËÍŇÓÖŘŠŤÚŮÜÝŽáäčçďéěëíňóöřšťúůüýž1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-";

function checkAllowedChars(str)
{
  var tx='';
  var txt = str;
  for(p = 0; p < txt.length; p++)
  {
    if (allowed.indexOf(txt.charAt(p)) == -1)
    {
     tx = tx + '-';
    }
   else tx = tx + txt.charAt(p);
     
   
  }
 return tx;
}

function productDetailsNavigationSwitch(element,block)
{
  $('#navigation ul li').removeClass('selected');
  $(element).addClass('selected');
 
  $('div.descriptionBlock').hide();
  $('#'+block).show();
}

function getConfirmation(text){
   var retVal = confirm(text);
   if( retVal == true ){
    return true;
   }else{
	  return false;
   }
}