Activate prettyPhoto on WordPress images, even when image URLs have a query string.

prettyphoto-activate.js

jQuery(document).ready(function(){
/*-----------------------------------------------------------------------------------*/
/* Add rel="lightbox" to image links if the lightbox is enabled */
/*-----------------------------------------------------------------------------------*/

if ( jQuery( 'body' ).hasClass( 'has-lightbox' ) && ! jQuery( 'body' ).hasClass( 'portfolio-component' ) ) {
	jQuery( 'a[href*=".jpg"], a[href*=".jpeg"], a[href*=".gif"], a[href*=".png"]' ).each( function () {
		var imageTitle = '';
		if ( jQuery( this ).next().hasClass( 'wp-caption-text' ) ) {
			imageTitle = jQuery( this ).next().text();
		}

		if ( '' !== imageTitle ) {
			jQuery( this ).attr( 'title', imageTitle );
		}

		if ( jQuery( this ).parents( '.gallery' ).length ) {
			var galleryID = jQuery( this ).parents( '.gallery' ).attr( 'id' );
			jQuery( this ).attr( 'rel', 'lightbox[' + galleryID + ']' );
		} else {
			jQuery( this ).attr( 'rel', 'lightbox' );
		}
	});

	jQuery( 'a[rel^="lightbox"]' ).prettyPhoto({social_tools: false});
}

});