function changeBack() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects.jpg)";
document.getElementById("caption").innerHTML = "Concord Brook Condominiums";
}

function changeBackgroundPennell() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-pennell.jpg)";
document.getElementById("caption").innerHTML = "Pennell Institute";

}

function changeBackgroundMorrison() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-morrison.jpg)";
document.getElementById("caption").innerHTML = "Morrison Development Center";
}

function changeBackgroundNewgloucester() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-newgloucester.jpg)";
document.getElementById("caption").innerHTML = "New Gloucester Fire Department";
}

function changeBackgroundBathsavings() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-bathsavings.jpg)";
document.getElementById("caption").innerHTML = "Bath Savings Institution";
}

function changeBackgroundConcordbrook() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-concordbrook.jpg)";
document.getElementById("caption").innerHTML = "Concord Brook Condominiums";
}
function changeBackgroundFalmouthlibrary() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-falmouthlibrary.jpg)";
document.getElementById("caption").innerHTML = "Falmouth Memorial Library";
}

function changeBackgroundHannafordbros() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-hannafordbros.jpg)";
document.getElementById("caption").innerHTML = "Hannaford Brothers, Scarborough Maine";
}

function changeBackgroundMontalvo() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-montalvo.jpg)";
document.getElementById("caption").innerHTML = "Montalvo Corporation";
}

function changeBackgroundNorwayhousing() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-norwayhousing.jpg)";
document.getElementById("caption").innerHTML = "Norway Housing Project";
}

function changeBackgroundPostoffice() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-postoffice.jpg)";
document.getElementById("caption").innerHTML = "United States Post Office";
}
function changeBackgroundSalt() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-salt.jpg)";
document.getElementById("caption").innerHTML = "Salt Institute for Documentary Studies";
}

function changeBackgroundVerizon() {
document.getElementById("banner").style.backgroundImage = "url(banner-projects-verizon.jpg)";
document.getElementById("caption").innerHTML = "Verizon, Bangor";
}