//ursula's javascript gallery! source: www.ursart.com.
//free to be modified or shared however u like, but not sold

//determine the initial gallery content & arrow links
function loadFirstImage(){
document.mainImage.src = imgDirectory + images[0] + ".jpg";
document.getElementById("captionLeft").innerHTML = textLeft[0];
document.getElementById("captionRight").innerHTML = textRight[0];
document.getElementById("moreInfo").innerHTML = additionalText[0];

document.arrowLeft.onclick = function leftArrowLink1(){
changeImage(images[images.length - 1])
}

document.arrowRight.onclick = function rightArrowLink1(){
changeImage(images[1])
}

//check to see if we should get rid of the outline
for (j = 0; j<imagesNoOutline.length; j++){
if (imagesNoOutline[j] == images[0])
break;
}
if (imagesNoOutline[j] == images[0]){
document.mainImage.style.color = "#ffffff";
} else {
document.mainImage.style.color = "#a9a9a9";
}
}

// make the thumbnail gallery!
function drawGallery(start,stop){
for (g=start; g<stop; g++){
thumbnail = "<a href='#' onClick = 'changeImage(\""
thumbnail += images[g]
thumbnail += "\")'>";

//check to see if the thumbnail is in the no outline array
for (h = 0; h<imagesNoOutline.length; h++){
if (imagesNoOutline[h] == images[g])
break;
}
// determine the thumbnail style
if (images[g] == imagesNoOutline[h]){
thumbnail += "<img class='galHoverWht galleryThumbnail' src='"
} else {
thumbnail += "<img class='galHoverGry galleryThumbnail' src='"
}

thumbnail += imgDirectory
thumbnail += images[g]
thumbnail += "_sm.jpg'>";
thumbnail += "</a>";

document.write(thumbnail);
}
}


//change the content
function changeImage(newImage) {
for (i = 0; i<images.length; i++){
if (images[i] == newImage)
break;
}

document.mainImage.src = imgDirectory + newImage + ".jpg";
document.getElementById("captionLeft").innerHTML = textLeft[i];
document.getElementById("captionRight").innerHTML = textRight[i];
document.getElementById("moreInfo").innerHTML = additionalText[i];

//change the left arrow link
if (i == 0){
previousImage = images[images.length - 1];
} else {
previousImage = images[i - 1];
}
document.arrowLeft.onclick = function leftArrowLink2(){
changeImage(previousImage);
}

//change the right arrow link
if (i == images.length - 1){
nextImage = images[0];
} else {
nextImage = images[i + 1];
}
document.arrowRight.onclick = function rightArrowLink2(){
changeImage(nextImage);
}

//check to see if we should get rid of the outline
if (imagesNoOutline){
for (j = 0; j<imagesNoOutline.length; j++){
if (imagesNoOutline[j] == newImage)
break;
}
if (imagesNoOutline[j] == newImage){
document.mainImage.style.color = "#ffffff";
} else {
document.mainImage.style.color = "#a9a9a9";
}
}

}