The following is the complete source code for the scrolling status bar script. This page is for reference only. To actually use the code, either save the source from the example file, or you can retrieve the scroll.js source file.
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<SCRIPT LANGUAGE="JavaScript">/* Please note that the comment method described by Netscape for hiding JavaScript
code from old browsers does NOT work for many non-Netscape browsers. This
unfortunate problem can be solved by writing a small CGI script that is called
as a server side include. Stay tuned for shareware code available on our site
to do this! */
/* Create an indexed array of n elements with length property */
function mklist(n)
{
this.length=n;
for (var c=1 ; c <= n ; c++) {
this[c]=0;
}
return this;
}
/* Gets a browser platform specific delay calibration for scrolling messages */
function browserdelay()
{
var retval=500;
if (navigator.userAgent.indexOf("Win") != 0) { /* Windows based Netscape */
retval=150;
}
else if (navigator.userAgent.indexOf("Mac") != 0) { /* Mac based Netscape */
retval=500;
}
else if (navigator.userAgent.indexOf("X11") != 0) { /* XWindows based Netscape */
retval=750;
}
return retval;
}
/* Create the configuration object for scrollit */
function mkcfg(n)
{
this.num=1; /* Which message we're on */
this.seed=0; /* Used for scrolling types */
this.list=new mklist(n); /* List of messages to display */
this.type=new mklist(n); /* Display method indicators */
this.delay=browserdelay(); /* Browser platform specific delay */
this.timer=0; /* System event timer */
this.showurl=(5 * 1000); /* Timeout for urlfix functionality */
this.looping=true; /* Continuously rotate messages? */
this.msgdisp=(5 * 1000); /* How long to display non-scrolling messages */
this.barwidth=100; /* How many character to size the status bar */
return this;
}
/* This function is used from within the page to display the url for a link */
function urlfix(obj)
{
window.clearTimeout(window.config.timer);
window.defaultStatus=obj.href;
window.config.timer=window.setTimeout("sbprint()",window.config.showurl);
return true;
}
/* This function handles the right to left scrolling */
function scrollit_r2l()
{
var out=" ";
var c=0;
if (window.config.seed <= window.config.barwidth && window.config.seed > 0) {
for (c=0 ; c < window.config.seed ; c++) {
out+=" ";
}
out+=window.config.list[window.config.num];
window.config.seed--;
window.status=out;
window.config.timer=window.setTimeout("scrollit_r2l()",window.config.delay);
}
else if (window.config.seed <= 0) {
if (-window.config.seed < window.config.list[window.config.num].length) {
out+=window.config.list[window.config.num].substring(-window.config.seed,window.config.list[window.config.num].length);
window.config.seed--;
window.status=out;
window.config.timer=window.setTimeout("scrollit_r2l()",window.config.delay);
}
else {
window.status=" ";
window.config.num++;
window.config.timer=window.setTimeout("sbprint()",window.config.msgdisp);
}
}
}
/* Call the following with the number of different messages you want to run */
window.config=new mkcfg(2);
window.config.list[1]="JavaScript is certainly fun!";
window.config.type[1]=0; /* Just display it, default type */
window.config.list[2]="Scrolling messages are nice and do not interfere with the rest of the display!";
window.config.type[2]=1; /* Scrolling from right to left */
/* This function runs the status bar, cycling through your messages */
function sbprint()
{
if (window.config.num <= window.config.list.length) {
if (window.config.type[window.config.num] == 0) {
window.status=window.config.list[window.config.num];
window.config.num++;
window.clearTimeout(window.config.timer);
window.config.timer=window.setTimeout('sbprint()',window.config.msgdisp);
}
else if (window.config.type[window.config.num] == 1) {
window.config.seed=window.config.barwidth;
scrollit_r2l();
}
}
else if (window.config.looping) {
window.config.num=1;
window.clearTimeout(window.config.timer);
window.config.timer=window.setTimeout('sbprint()',window.config.delay);
}
}
</SCRIPT>