How to add "alt" to rotator pictures?

for ($loop = 1; $loop <= 9; $loop += 1) { if ($imageArray[$loop]) { ?> <?php if($imageLinkArray[$loop]) { ?><a href="<?php echo $imageLinkArray[$loop]; ?>" <?php if ($linkNewWindow) { ?>target="_blank"<?php } ?>><?php } ?><img src="<?php echo $imageFolder; ?>/<?php echo $imageArray[$loop]; ?>" alt="" <?php if ($imageDescArray[$loop]) { ?>title="<?php echo $imageDescArray[$loop]; ?>" <?php } ?> /><?php if($imageLinkArray[$loop]) { ?></a><?php } echo "\n" ?> <?php } }