var imgs = new Array(); var imgcnt = 0; var thisimg = 0;
imgs[imgcnt++] = 'images\/constructionpic1.JPG';
imgs[imgcnt++] = 'images\/constructionpic2.JPG';
imgs[imgcnt++] = 'images\/constructionpic3.JPG';
imgs[imgcnt++] = 'images\/constructionpic4.JPG';
imgs[imgcnt++] = 'images\/constructionpic5.JPG';
imgs[imgcnt++] = 'images\/constructionpic6.JPG';
imgs[imgcnt++] = 'images\/constructionpic7.JPG';
imgs[imgcnt++] = 'images\/constructionpic8.JPG';
imgs[imgcnt++] = 'images\/constructionpic9.JPG';
imgs[imgcnt++] = 'images\/constructionpic10.JPG';
imgs[imgcnt++] = 'images\/constructionpic11.JPG';
imgs[imgcnt++] = 'images\/constructionpic12.JPG';
imgs[imgcnt++] = 'images\/constructionpic13.JPG';
imgs[imgcnt++] = 'images\/constructionpic14.JPG';

function nextImg() {
if (document.images) {
  thisimg++;
  if (thisimg >= imgcnt) thisimg = 0;
  document.rollimg.src = imgs[thisimg];
}
}
function prevImg() {
if (document.images) {
  thisimg--;
  if (thisimg < 0) thisimg = imgcnt-1;
  document.rollimg.src = imgs[thisimg];

}
}