function loadDetail( kniha )
{
	var url 	= 'lib/kniha_info.php?kniha=' + kniha;
	var target	= '#detaily' + kniha;

	$.get( url, function(data) {
  			$(target).html(data);
	});
	
}


function handleDetail( kniha )
{
	var collapsed 	= '▹';	
	var displayed	= '▿';

	var link 	= '#trg' + kniha;
	var div		= '#detaily' + kniha;

	if ( $(link).hasClass( 'nolink' ))
	{
		// "open" box
		$(link).removeClass( 'nolink' );

		// load details if required
		if ( $(div).text() == "" ) loadDetail( kniha );

		// set style to visible and change triangle
		$(div).show();
		$(link).html( displayed );
	}
	else
	{
		// close triangle, hide
		$(link).addClass( 'nolink' );
		$(div).hide();
		$(link).html( collapsed );
	}	
}