Javascript slideshow help

Hi I did some code for slide show. It works fine just I wish to add this slide show few times on one website with different images.
I mean if I want to use 5 different slide shows I need to repeat this code 5 times
Is there any chance that I don't need to repeat this code in JavaScript external files and change arrays for each new slide show what i want to use?
I wish somehow change just arrays with different images which depend on what slide show is clicked on... if that is possible?

thank you for any help

myImages=new Array();
myImages[0]="images/opt.images/energyshots/optDr_dunkel_logo.jpg";
myImages[1]="images/opt.images/energyshots/optDr_hell.jpg";
myImages[2]="images/opt.images/energyshots/opt92__news_gross.jpg";
myImages[3]="images/opt.images/energyshots/opt91__news_gross.jpg";
myImages[4]="images/opt.images/energyshots/opt93__news_gross.jpg";
//imagecounter=myImages.length-1;
i=0;

function previous(){
if (i == 0) {
		i = myImages.length;
	}
	i--;
	document.getElementById('imageviewer').src=myImages[i];
	}


function next()
 {
	i++;
	if (i == myImages.length) {
		i = 0;
	}
	document.getElementById('imageviewer').src=myImages[i];
	}

function canceltime() {
	clearTimeout(the_timeout); 
}

function changeImage()

{
    document.getElementById('imageviewer').src=myImages[i];
    i++;
    if (i >= myImages.length) 
    {
        i = 0;
    }
     the_timeout = setTimeout("changeImage();", 1000);
}

Code (markup):