if (document.images) {
	mapa_cr = new Image(); mapa_cr.src = 'ch-stanice/images/mapa-cr.gif';
	praha_kraj = new Image(); praha_kraj.src = 'ch-stanice/images/mapa-praha-kraj.gif';
	jihocesky_kraj = new Image(); jihocesky_kraj.src = 'ch-stanice/images/mapa-jihocesky-kraj.gif'; 
	jihomoravsky_kraj = new Image(); jihomoravsky_kraj.src = 'ch-stanice/images/mapa-jihomoravsky-kraj.gif';
	karlovarsky_kraj = new Image(); karlovarsky_kraj.src = 'ch-stanice/images/mapa-karlovarsky-kraj.gif';
	kralovehradecky_kraj = new Image(); kralovehradecky_kraj.src = 'ch-stanice/images/mapa-kralovehradecky-kraj.gif';
	liberecky_kraj = new Image(); liberecky_kraj.src = 'ch-stanice/images/mapa-liberecky-kraj.gif';
	moravskoslezsky_kraj = new Image(); moravskoslezsky_kraj.src = 'ch-stanice/images/mapa-moravskoslezsky-kraj.gif';
	olomoucky_kraj = new Image(); olomoucky_kraj.src = 'ch-stanice/images/mapa-olomoucky-kraj.gif';
	pardubicky_kraj = new Image(); pardubicky_kraj.src = 'ch-stanice/images/mapa-pardubicky-kraj.gif';
	plzensky_kraj = new Image(); plzensky_kraj.src = 'ch-stanice/images/mapa-plzensky-kraj.gif';
	stredocesky_kraj = new Image(); stredocesky_kraj.src = 'ch-stanice/images/mapa-stredocesky-kraj.gif';
	ustecky_kraj = new Image(); ustecky_kraj.src = 'ch-stanice/images/mapa-ustecky-kraj.gif';
	vysocina_kraj = new Image(); vysocina_kraj.src = 'ch-stanice/images/mapa-vysocina-kraj.gif';
	zlinsky_kraj = new Image(); zlinsky_kraj.src = 'ch-stanice/images/mapa-zlinsky-kraj.gif';
}

function selectPlace(what)
{
    place = eval(what + '.src');
    if (document.images) document.getElementById('chs-mapa').src = place;
}

function unselectPlace()
{
    if (document.images) document.getElementById('chs-mapa').src = mapa_cr.src;
}