/**
 * @author Vaclav Bohac
 * @return void
 * 
 * Selects random element in specialni_nabidka
 * and fire click event on it.
 */
function displayRandomImage() {
	var offerLength  = $(".specialni_nabidka a").length;
	var i = Math.floor(Math.random() * (offerLength));
	$('.specialni_nabidka a:eq('+i+')').trigger('click');
}

$(document).ready(function () {
	displayRandomImage();
});