var Image_array = new Array(10);
//new Array("Image location",width,height)
//Book Jackets
Image_array[0] = "images/portfolio/gutsy_women.jpg";
Image_array[1] = "images/portfolio/jakarta.jpg";
Image_array[2] = "images/portfolio/manzanar.jpg";
Image_array[3] = "images/portfolio/earth.jpg";
//Maps
Image_array[4] = "images/portfolio/world_map.jpg";
Image_array[5] = "images/portfolio/ny_times_map.jpg";
Image_array[6] = "images/portfolio/country_living_map.jpg";
Image_array[7] = "images/portfolio/yankee_map.jpg";
Image_array[8] = "images/portfolio/bermuda.jpg";
Image_array[9] = "images/portfolio/australia.jpg";
Image_array[10] = "images/portfolio/china.jpg";
//Other Work
Image_array[11] = "images/portfolio/fairy_cards.jpg";
Image_array[12] = "images/portfolio/greeting_card.jpg";
Image_array[13] = "images/portfolio/weather.jpg";
Image_array[14] = "images/portfolio/growth_chart.jpg";
Image_array[15] = "images/portfolio/calendar.jpg";
Image_array[16] = "images/portfolio/cards.jpg";
Image_array[17] = "images/portfolio/lullaby.jpg";
Image_array[18] = "images/portfolio/blocks.jpg";
Image_array[19] = "images/portfolio/woman.jpg";

var index = 0;
var selected = 0;
var next = 1;
var back = 0;
var dog_trans = "images/trans-gif.gif"
var dog_n_vis = "images/dog-next.gif"
var dog_b_vis = "images/dog-back.gif"
var dog_m_vis = "images/dog-middle.gif"

function setVariables(){
next = selected + 1;
back = selected - 1;
}
function nextImage(){
if (selected < 3){
document.book.src = Image_array[next];
selected = next;
setVariables()
} else if (selected == 4 || selected == 5  || selected == 6  || selected == 7  || selected == 8  || selected == 9) {
document.book.src = Image_array[next];
selected = next;
setVariables()
} else if (selected == 11 || selected == 12 || selected == 13  || selected == 14  || selected == 15  || selected == 16  || selected == 17  || selected == 18 ) {
document.book.src = Image_array[next];
selected = next;
setVariables()
} else if (selected > 18){
selected = 19
next = 19
back = selected - 1
} else {
doNothing()
}
}
function backImage(){
if (selected >0 & selected <= 3){
document.book.src = Image_array[back];
selected = back;
setVariables()
} else if (selected >4 & selected <= 10){
document.book.src = Image_array[back];
selected = back;
setVariables()
} else if (selected >11 & selected <= 19){
document.book.src = Image_array[back];
selected = back;
setVariables()
} else if (selected == 0 || selected == 4 || selected == 11){
doNothing()
} else {
doNothing()
}
}
function portLoad(){
document.book.src = Image_array[0];
selected = 0;
document.dog_back.src = dog_b_vis;
document.dog_mid.src = dog_m_vis;
document.dog_next.src = dog_n_vis;
document.dog_back.width = 65;
document.dog_back.height = 55;
document.dog_next.width = 66;
document.dog_next.height = 55;
setVariables()
}
function mapsLoad(){
if (selected == 0){
doNothing()
} else {
document.book.src = Image_array[0];
selected = 0;
document.dog_back.src = dog_b_vis;
document.dog_mid.src = dog_m_vis;
document.dog_next.src = dog_n_vis;
document.dog_back.width = 65;
document.dog_back.height = 55;
document.dog_next.width = 66;
document.dog_next.height = 55;
setVariables()
}
}
function toysLoad(){
if (selected == 4){
doNothing()
} else {
document.book.src = Image_array[4];
selected = 4;
document.dog_back.src = dog_b_vis;
document.dog_mid.src = dog_m_vis;
document.dog_next.src = dog_n_vis;
document.dog_back.width = 65;
document.dog_back.height = 55;
document.dog_next.width = 66;
document.dog_next.height = 55;
setVariables()
}
}
function otherLoad(){
if (selected == 11){
doNothing()
} else {
document.book.src = Image_array[11];
selected = 11;
document.dog_back.src = dog_b_vis;
document.dog_mid.src = dog_m_vis;
document.dog_next.src = dog_n_vis;
document.dog_back.width = 65;
document.dog_back.height = 55;
document.dog_next.width = 66;
document.dog_next.height = 55;
setVariables()
}
}
function doNothing(){
}