// JavaScript Document

/*var counter = -1;
var pic= new Array(4);

pic[counter += 1] = "IMG_0001_JPG.jpg";
pic[counter += 1] = "IMG_0002_JPG.jpg";
pic[counter += 1] = "IMG_0003_JPG.jpg";
pic[counter += 1] = "IMG_0004_JPG.jpg";*/

function ChangeImage( MyDir )
{
var NextVal = (myform.formval.value * 1) + (MyDir * 1);
document["ImgName"].src = folder + "images/" + pic[NextVal];
if ( NextVal <= (counter - 1) && NextVal != 0 ) { myform.formval.value = NextVal; }
//myform.formval.value = NextVal;

}