JQuery UI tooltip with a close link for mobile

Here is the JQuery code I use to to set up JQuery UI tool tips with a close link that only appears on mobile platforms. This is useful because on a desktop, the tool tip will close when you mouseout from the target element, but on a touch platform it sticks around.

// Set up tool tips for images and anchors.
$( document ).tooltip({
   items: "a[title], img[alt], .toolTip[title], :not(.noToolTip)",
  track: true,
  position: { my: "left+15 center", at: "right center" },
   content: function() {
      var element = $( this );
      var closer = closerLink = '';
      if (isMobile()) {
         closer = ' <br><div onClick="$(this).parent().parent().remove();" style="color: blue; text-decoration: underline; text-align: right;">Close</div>';
         closerLink = ' <br>Tap link again to open it.<br><div onClick="$(this).parent().parent().remove();" style="color: blue; text-decoration: underline; text-align: right;">Close</div>';
      }
      // noToolTip means NO TOOL TIP.
      if ( element.is( ".noToolTip" ) ) {
         return null;
      }
      // Anchor - use title.
      if ( element.is( "a[title]" ) ) {
         return element.attr( "title" ) + closerLink;
      }
      // Image - use alt.
      if ( element.is( "img[alt]" ) ) {
         return element.attr( "alt" ) + closer;
      }
      // Any element with toolTip class - use title.
      if ( element.is( ".toolTip[title]" ) ) {
         return element.attr( "title" ) + closer;
      }
   }
});

function isMobile() {
   return (/iPhone|iPod|iPad|Android|BlackBerry/).test(navigator.userAgent);
}

I am targeting three types of things here:

• Anchor tags (a) with a title attribute.
• Image tags (img) with a title attribute.
• Any element with class toolTip.
• And specifically exclude any element with class noToolTip.

You can see this in action on my newly refreshed site: Chihuahua Rescue Victoria.