//functions for rolling teasers
var CurrentNum = 0;
var howMany = 0;
var teaserSlideShowArray;
var interval = 0;
function dSwitch(Teaser,on) {
    document.getElementById(Teaser).style.display=(on==1 ? 'block' : 'none');
}

function initTeaserSlideShow(Teaser, timeDelay) {
	this.howMany = Teaser.length;
	this.CurrentNum = 0;
	this.interval= timeDelay * 1000;
	this.teaserSlideShowArray = Teaser;
}

function startTeaserSlideShow(Teaser) {
	if(Teaser.teaserSlideShowArray.length > 0) {
		dSwitch(Teaser.teaserSlideShowArray[0],1);
	}
}

function teaserSlideShow(Teaser) {
	Teaser.CurrentNum++;
	if (Teaser.CurrentNum == Teaser.howMany) {
		Teaser.CurrentNum = 0;
	}
    for(i = 0 ; i < Teaser.howMany ; i++) {
		dSwitch(Teaser.teaserSlideShowArray[i],0);
	}
	dSwitch(Teaser.teaserSlideShowArray[Teaser.CurrentNum],1);
}