bannerCurrent = 1;
bannerMax = 4;
bannerInterval = 8000; //time in millisec for each banner to display. 1000 = 1sec.
bannerPlay = true; //whether the banner is currently rotating (true) or paused (false)

function bannerNext() {
	fade("home-banner-"+bannerCurrent,-1,fadeInterval,fadeIncrement);
	document.getElementById('home-banner-nav-'+bannerCurrent).className="off";
	if (bannerCurrent==bannerMax) {
		bannerCurrent=1;
	}
	else {
		bannerCurrent++;
	}
	fade("home-banner-"+bannerCurrent,1,fadeInterval,fadeIncrement);
	document.getElementById('home-banner-nav-'+bannerCurrent).className="on";
	if (bannerPlay) {
		bannerTimer=window.clearInterval(bannerTimer);
		bannerTimer=self.setInterval("bannerNext()",bannerInterval);
	}
}

function bannerPrev() {
	fade("home-banner-"+bannerCurrent,-1,fadeInterval,fadeIncrement);
	document.getElementById('home-banner-nav-'+bannerCurrent).className="off";
	if (bannerCurrent==1) {
		bannerCurrent=bannerMax;
	}
	else {
		bannerCurrent--;
	}
	fade("home-banner-"+bannerCurrent,1,fadeInterval,fadeIncrement);
	document.getElementById('home-banner-nav-'+bannerCurrent).className="on";
	if (bannerPlay) {
		bannerTimer=window.clearInterval(bannerTimer);
		bannerTimer=self.setInterval("bannerNext()",bannerInterval);
	}
}

function bannerSwitch(id) {
	if (0<id && id<bannerMax+1) {
		fade("home-banner-"+bannerCurrent,-1,fadeInterval,fadeIncrement);
		document.getElementById('home-banner-nav-'+bannerCurrent).className="off";
		bannerCurrent=id;
		fade("home-banner-"+bannerCurrent,1,fadeInterval,fadeIncrement);
		document.getElementById('home-banner-nav-'+bannerCurrent).className="on";
		if (bannerPlay) {
			bannerTimer=window.clearInterval(bannerTimer);
			bannerTimer=self.setInterval("bannerNext()",bannerInterval);
		}
	}
}

function bannerPausePlay() {
	if (bannerPlay) {
		bannerPlay=false;
		bannerTimer=window.clearInterval(bannerTimer);
		document.getElementById("home-banner-nav-pause").className="play";
		document.getElementById("home-banner-nav-pause").innerHTML="Play";
	}
	else {
		bannerPlay=true;
		bannerTimer=self.setInterval("bannerNext()",bannerInterval);
		document.getElementById("home-banner-nav-pause").className="pause";
		document.getElementById("home-banner-nav-pause").innerHTML="Pause";
	}
}