var interval = 5.0; // delay between rotating images (in seconds)
var random_display = 0; // 0 = no, 1 = yes
interval *= 1000;

var ad_index = 0;
ad_list = new Array();
ad_list[ad_index++] = 'FREE SHIPPING(over $99.00) IN THE USA AND CANADA';
ad_list[ad_index++] = 'CHECK OUT ON SALE ITEMS';
var number_of_ad = ad_list.length;

function generate(x, y)
{
	var range = y - x + 1;
	return Math.floor(Math.random() * range) + x;
}

function getNextAd()
{
	if (random_display)
	{
		ad_index = generate(0, number_of_ad-1);
	}
	else
	{
		ad_index = (ad_index+1) % number_of_ad;
	}
	return(ad_list[ad_index]);
}

function rotateAd(place)
{
	var new_ad = getNextAd();
	document.getElementById(place).innerHTML = new_ad;
	var recur_call = "rotateAd('"+place+"')";
	setTimeout(recur_call, interval);
}