function pg_slidePlay()
{
	clearInterval(pg_iid);
	pg_nextSlide();
	pg_iid=setInterval('pg_nextSlide()',5000);
}

function pg_slidePause()
{
	clearInterval(pg_iid);
}

function pg_nextSlide()
{
	var pg_sid;
	
	if (which_slide==1)
		pg_sid='slide2a';
	else
		pg_sid='slide2b';
	document.getElementById(pg_sid).src=pg_arImgs[pg_curSlide].src;
	document.getElementById("slideCaption").innerHTML=pg_arCaps[pg_curSlide];
	pg_curSlide=(pg_curSlide+1)%pg_maxSlide;
	which_slide=(which_slide+1)%2;
	pg_fnToggle();
}

function pg_fnToggle()
{
	var slide2b=document.getElementById('slide2b');
	if (slide2b.filters)
		slide2b.filters[0].Apply();
	if (slide2b.style.visibility=='visible')
		slide2b.style.visibility='hidden';
	else
		slide2b.style.visibility='visible';
	if (slide2b.filters)
		slide2b.filters[0].Play();
}