Add alt text to image in cute slider wordpress plugin

Question

Below is the PHP code for the images section in my website using the Cute slider plugin. I am trying to add alt text by adding text to the line $data .= '<img '.$src.''.$datasrc.''.$thumb.'>'; but the alt text ends up duplicated. Where should I add the alt text?

if($layerkey == 0) {
    $src = ' src="'.$layer['properties']['image'].'"';
    $datasrc = '';
}
else {
    $src = ' src="'.$GLOBALS['csPluginPath'].'/img/blank.png" width="1" height="1" alt="Blank"';
    $datasrc = ' data-src="'.$layer['properties']['image'].'"';
}

$data .= '<li data-delay="'.$layer['properties']['slidedelay'].'" data-src="'.$layer['properties']['slidedelay'].'" data-trans3d="'.$layer['properties']['3d_transitions'].'" data-trans2d="'.$layer['properties']['2d_transitions'].'">';

$data .= '<img '.$src.''.$datasrc.''.$thumb.'>';

The full php file is here : http://pastie.org/9167151

Answer 1

On this line: $src = ' src="'.$GLOBALS['csPluginPath'].'/img/blank.png" width="1" height="1" alt="Blank"'; alt is already defined, that is why you get two definitions when you try to add it in the second place. You should change the definition on that line instead of on the $data .= '<img '.$src.''.$datasrc.''.$thumb.'>'; line.