var index = document.location.search;
index = index.slice(1);
function next() {
var newGroupIndex;
var newPositionIndex;
var newImageIndex;
var groupAndPosition = getGroupAndPosition(index);
var groupIndex = groupAndPosition[0];
var positionIndex = groupAndPosition[1];
if ( positionIndex == myImageGroups[groupIndex].contents.length - 1 ) {
if ( groupIndex == 0 ) {
newGroupIndex = myImageGroups.length - 1;
}
else {
newGroupIndex = groupIndex - 1;
}
newPositionIndex = 0;
}
else {
newPositionIndex = positionIndex + 1;
newGroupIndex = groupIndex;
}
newImageIndex = myImageGroups[newGroupIndex].contents[newPositionIndex];
//window.alert("newGroupIndex = " + newGroupIndex + "\nnewPositionIndex = " + newPositionIndex + "\nnewImageIndex = " + newImageIndex);
document.location.search = "?" + newImageIndex;
}
function previous() {
var newGroupIndex;
var newPositionIndex;
var newImageIndex;
var groupAndPosition = getGroupAndPosition(index);
var groupIndex = groupAndPosition[0];
var positionIndex = groupAndPosition[1];
if ( positionIndex == 0 ) {
if ( groupIndex == myImageGroups.length - 1 ) {
newGroupIndex = 0;
}
else {
newGroupIndex = groupIndex + 1;
}
newPositionIndex = myImageGroups[newGroupIndex].contents.length - 1;
}
else {
newPositionIndex = positionIndex - 1;
newGroupIndex = groupIndex;
}
newImageIndex = myImageGroups[newGroupIndex].contents[newPositionIndex];
//window.alert("newGroupIndex = " + newGroupIndex + "\nnewPositionIndex = " + newPositionIndex + "\nnewImageIndex = " + newImageIndex);
document.location.search = "?" + newImageIndex;
}
function getGroupAndPosition(imageIndex) {
var groupAndPosition = new Array();
for ( var i=0; i < (myImageGroups.length ); i++ ) {
for ( var j=0; j < (myImageGroups[i].contents.length ); j++ ) {
if ( myImageGroups[i].contents[j] == imageIndex ) {
groupAndPosition[0] = i;
groupAndPosition[1] = j;
}
}
}
//window.alert(groupAndPosition[0] + " " + groupAndPosition[1] );
return groupAndPosition;
}
function renderThumbnails() {
for ( var i = (myImageGroups.length - 1); i > -1; i-- ) {
document.write('');
document.write('| ' + myImageGroups[i].text + ' | ');
document.write('
');
document.write('');
document.write('');
document.write('');
document.write('');
for ( var j = 0; j < myImageGroups[i].contents.length; j++ ) {
document.write(' | ');
}
document.write(' ');
document.write(' ');
document.write(' | ');
document.write('
');
document.write('');
document.write('| ' + myImageGroups[i].text2 + ' | ');
document.write('
');
document.write('');
document.write('| | ');
document.write('
');
}
}