var pics = new Array(); // the array for the image URLs
var time = 6000; // this is in milliseconds, so multiply your seconds needed by 1000

// just put the URL to the image inside the quotation marks. To add a new image, just add another pics.push("") line
pics.push("images/wilderns.jpg");
pics.push("images/diversty.jpg");
pics.push("images/habitat.jpg");
pics.push("images/adapt.jpg");
pics.push("images/ecology.jpg");