var ad_name = "ad_banner";
var interval = 7; // delay between rotating images (in seconds)
var random_display = 0; // 0 = no, 1 = yes
interval *= 1000;

var image_index = 0;
var url_index = 0;

image_list = new Array();
url_list = new Array();

// removed 02-24-09
//image_list[image_index++] = new imageItem("http://www.travelnursingcentral.com/advertising/valley_health_banner.gif");
//url_list[url_index++]     = "http://www.vhcsystems.com";

image_list[image_index++] = new imageItem("http://travelnursingcentral.com/images/banneradtnc.png");
url_list[url_index++]     = "http://travelnursingcentral.com/travel-nursing-survey.html";

image_list[image_index++] = new imageItem("http://www.travelnursingcentral.com/images/ad_banners/studentbannerTNC.png");
url_list[url_index++]     = "http://www.medicalsolutions.com/travel-nursing-resources/studentguide/";

//image_list[image_index++] = new imageItem("http://www.travelnursingcentral.com/images/ad_banners/Easy-LoyaltyBonus-TNC.jpg");
//url_list[url_index++]     = "http://www.medicalsolutions.com/travel-nursing-benefits/loyalty-program/";







var number_of_image = image_list.length;
function imageItem(image_location) {
this.image_item = new Image();
this.image_item.src = image_location;
}
function get_ImageItemLocation(imageObj) {
return(imageObj.image_item.src)
}
function generate(x, y) {
var range = y - x + 1;
return Math.floor(Math.random() * range) + x;
}
function getNextImage() {
if (random_display) {
image_index = generate(0, number_of_image-1);
}
else {
image_index = (image_index+1) % number_of_image;
}
var new_image = get_ImageItemLocation(image_list[image_index]);

obj=document.getElementById("ad_href");
if (url_list[image_index]) {
   document.getElementById('ad_href').href = url_list[image_index];
} else {
   document.getElementById('ad_href').href = '#';
}
return(new_image);
}
function rotateImage(place) {
var new_image = getNextImage();
document[place].src = new_image;
var recur_call = "rotateImage('"+place+"')";
setTimeout(recur_call, interval);
}

document.write ("<a id=ad_href href=\"#\"><img name="+ad_name+" src=\"\" width=468 height=100 vspace=8 border=0></a>");
rotateImage(ad_name);