Foundation alert code short code and function. Automatically adds .alert-box, optional additional classes and thing to close alert. Default text also set. http://foundation.zurb.com/docs/components/alert-boxes.html

alert-box-function.php

function slug_alert_box($content,$class) {
  if ($content == '') {
  //use this to set a default alert or take out to allow shortcodes without content to be just blank boxes.
		$content = 'DEFAULT ALERT TEXT';
	}
	if ($class == '') {
		$classes = 'alert-box';
	}
	else {
		$class = 'alert-box '.$class;
	}
	echo '<div data-alert class="'.$class.'">'.$content.'<a href="#" class="close">&times;</a></div>'
}

alert-box-shortcode.php

//[alert-box] or [alert-box class"additonal classes, nto including .alert-box"
function slug_alert_box_sc($atts, $content = null) {
   extract(shortcode_atts(array(
      'class' => 'alert-box'
   ), $atts));
  //use this to set a default alert or take out to allow shortcodes without content to be just blank boxes.
   if ($content == '') {
  	$content = 'DEFAULT ALERT TEXT';
	}
	if ($class == '') {
		$classes = 'alert-box';
	}
	else {
		$classes = 'alert-box '.$class;
	}
   return '<div data-alert class="'.$classes.'">'.$content.'<a href="#" class="close">&times;</a></div>';
}
add_shortcode("alert-box", "slug_alert_box_sc");