function hideSearch() {
  document.getElementById('katalog_search').style.display='none';
  document.getElementById('katalog_search_switch_on').style.display='block';
  setCookie('search-visibility', 'hidden', 1);
}

function showSearch() {
  document.getElementById('katalog_search').style.display='block';
  document.getElementById('katalog_search_switch_on').style.display='none';
  setCookie('search-visibility', 'shown', 1);
}

function setCookie( name, value, expires, path, domain, secure ) {
// set time, it's in milliseconds
  var today = new Date();
  today.setTime( today.getTime() );
  
  /*
  if the expires variable is set, make the correct 
  expires time, the current script below will set 
  it for x number of days, to make it for hours, 
  delete * 24, for minutes, delete * 60 * 24
  */
  if ( expires )
  {
  expires = expires * 1000 * 60 * 60 * 24;
  }
  var expires_date = new Date( today.getTime() + (expires) );
  
  document.cookie = name + "=" +escape( value ) +
  ( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
  ( ( path ) ? ";path=" + path : "" ) + 
  ( ( domain ) ? ";domain=" + domain : "" ) +
  ( ( secure ) ? ";secure" : "" );
}

function getCookie( check_name ) {
// first we'll split this cookie up into name/value pairs
// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f
	
	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );
		
		
		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');
	
		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}