if you dont want to link image to the popup fullsize image, you can remove lines 645-682 in file /plugins/content/smartresizer/smartresizer.php
So you need to remove this code:
if (!($is_blog && $readmorelink)) {
if (isset($lthethumb) && $lthethumb)
$src = $lthethumb;
elseif ((int)$botParams->get( 'watermark', '0')>0 && $botParams->get( 'watermark_file', ''))
$src = $wm_thethumb;
elseif (!$uri->toString(array('host')))
$src = rtrim(JURI::base(),'/') . '/' . ltrim($src,'/');
if ($openstyle == 0) {
$doc = JFactory::getDocument();
if (!($image_width && $image_height))
list($image_width,$image_height)=getimagesize($src);
if(version_compare(JVERSION,'1.6.0','<')) $paddpath = ''; else $paddpath = 'smartresizer/';
$doc->addScript( "plugins/content/smartresizer/".$paddpath."js/multithumb.js" );
$text = '<a href="javascript:void(0)" onclick = "smartthumbwindow(\''.$src.'\',\''.$alt.'\','.$image_width.','.$image_height.',0,0);" >'.$text.'</a>';
}
elseif ($openstyle == 1) {
JHTML::_('behavior.modal');
if (!($image_width && $image_height))
list($image_width,$image_height)=getimagesize($src);
$text = '<a style="background:none;" rel="{handler: \'iframe\', size: {x: '.$image_width.', y: '.$image_height.'}}" target="_blank" href="'.$src.'" onclick="SqueezeBox.fromElement(this,{parse: \'rel\'});return false;" >'.$text.'</a>';
}
elseif ($openstyle == 2) {
$lang = JFactory::getLanguage();
$lang->load('plg_content_smartresizer',JPATH_ADMINISTRATOR);
$text = '<a href="'.$src.'" style="background:none;" onclick="return hs.expand(this)" >'.$text.'</a>'."\n";
if ($thetitle)
$text .= '<div class="highslide-caption">'.$thetitle.'</div>';
}
}
else if ($readmorelink) {
if(version_compare(JVERSION,'1.6.0','<'))
$link = JRoute::_(ContentHelperRoute::getArticleRoute($row->slug, $row->catslug, $row->sectionid));
else
$link = JRoute::_(ContentHelperRoute::getArticleRoute($row->slug, $row->catid));
$text = '<a href="' . $link . '" >'.$text.'</a>';
}