please refine these codes for slideshow of images.....

[nostalgia149]

This is the script code i used for getting a slideshow of pictures..
can u help me with simple codes so that all these pictures can be retrieved from the database??? or let me know if i m getting wrong??

<SCRIPT LANGUAGE="JavaScript">
<!-- Original:  Mike Canonigo ([e-mail]) -->
<!-- Web Site:  [url]http://www.munkeehead.com[/url] -->

<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! [url]http://javascript.internet.com[/url] -->

<!-- Begin
NewImg = new Array 
(
"images/8-x-10-tasveer-5e.jpg",
"images/93vande-mataram.jpg",
"images/2008_slumdog_millionaire_005.jpg"
);
var ImgNum = 0;
var ImgLength = NewImg.length - 1;

//Time delay between Slides in milliseconds
var delay = 1000;

var lock = false;
var run;
function chgImg(direction) 
{
if (document.images) 
{
ImgNum = ImgNum + direction;
if (ImgNum > ImgLength) 
{
ImgNum = 0;
}
if (ImgNum < 0) 
{
ImgNum = ImgLength;
}
document.slideshow.src = NewImg[ImgNum];
}
}
function auto() 
{
if (lock == true) 
{
lock = false;
window.clearInterval(run);
}
else if (lock == false) 
{
lock = true;
run = setInterval("chgImg(1)", delay);
}
}
//  End -->
</script>