var mall_incr = 5;
var mall_interval_time = 5000;
var mall_play = true;
var mall_last = document.getElementById('poradna_'+mall_incr);
var mall_interval;

function play_next(reset_interval){
	mall_incr++;
	if(mall_incr>mall_count) mall_incr=1;
	
	if(mall_last) mall_last.style.display="none";
	if(document.getElementById('poradna_'+mall_incr))
		document.getElementById('poradna_'+mall_incr).style.display="block";
	else
		clearInterval(mall_interval);

	mall_last = document.getElementById('poradna_'+mall_incr);
	if(reset_interval && mall_play){
		clearInterval(mall_interval);
		mall_interval = setInterval('play_next(false)',mall_interval_time)
	}
}

function play_prev(){
	mall_incr--;
	if(mall_incr<1) mall_incr = mall_count;
	
	if(mall_last) mall_last.style.display="none";
	document.getElementById('poradna_'+mall_incr).style.display="block";

	mall_last = document.getElementById('poradna_'+mall_incr);
	clearInterval(mall_interval);
	if(mall_play) mall_interval = setInterval('play_next(false)',mall_interval_time);
}

function toggle_play_pause(play_img, pause_img){
	mall_play = !mall_play;
	if(!mall_play) clearInterval(mall_interval);
	if(mall_play) mall_interval=setInterval('play_next(false)',mall_interval_time);
	document.getElementById('play_pause').src = mall_play ? pause_img : play_img;
}

function slideshow_invoke(){
	if(mall_count)
	mall_interval = setInterval('play_next(false)',mall_interval_time);
/*	for( abc = 1 ; abc <= mall_count ; abc++ ){
		if(document.getElementById('poradna_'+abc)) 
			document.getElementById('poradna_'+abc).style.display="none";
	}*/
	play_next();
}