// JavaScript Document

//All you have to do is to add files to this list below:

//First get your list of files in the order you want them:
database=new Array("news.html","http://lhsfoss.org/fossweb/news/calendar.html");

//The above is all you need to change!

//We want to automatically discover the number of files

NumberOfFiles=database.length;

//Next find out which page, this one is//

//We use the location.href property and extract the filename

//from this string using lastIndexOf:

StringA=location.href;
hashLoc = StringA.lastIndexOf("#");
endLoc = (hashLoc > -1) ? hashLoc : StringA.length;
A=StringA.lastIndexOf("/")+1;
ThisFilename=StringA.substring(A,endLoc);


//Now we find the current page nunmber (in the list)

//Remember that Arrays start at 0 and end at number of 

//elements less one. So the last element is:
n=NumberOfFiles-1;

//Now we look through to list to find our file, and 

//therefore, its number in the list:

for (var i = 0; i <= n; i++)
{
if (database[i]==ThisFilename)
{
ThisPageNumber=i;
}

}
//if at default index file
if (ThisFilename=='')
{
ThisPageNumber=0;
}
//determine the numbers of the previous and the next pages//

function goBack(){
if (ThisPageNumber-1<0)

//We don't want to go into negative numbers or numbers

//bigger than the number of files! So if the file number less

//one is less than zero, there is nowhere left to go!
{
alert("You are at the beginning of the series")
}

//Otherwise we just take one of the current file number

//and get the number for the previous file:
else
{top.location=database[ThisPageNumber-1]}}

function goForward(){
if (ThisPageNumber+1>n){
alert("You are at the end of the series")

//If the user is clicking on the last file, he or she

//cannot go forward. Otherwise, the next file is the current

//file number plus one:
}
else
{top.location=database[ThisPageNumber+1]}}

//and so that's our code. All we have to do is to change files

//in the Array database! Nice and lazy!