Responsive Javascript not running correctly on my site.

A few weeks ago I added this javascript to my website. What it does is makes my <abbr> tag responsive and work on mobile devices by ‘clicking’ on them.

My site

The script is called:

tooltips.js

The code reads like this:

jQuery( document ).ready( function($)
    {
    var targets = $( '[rel~=tooltip]' ),
        target  = false,
        tooltip = false,
        title   = false;

    targets.bind( 'mouseenter', function()
    {
        target  = $( this );
        tip     = target.attr( 'title' );
        tooltip = $( '<div id="tooltip"></div>' );

        if( !tip || tip == '' )
            return false;

        target.removeAttr( 'title' );
        tooltip.css( 'opacity', 0 )
               .html( tip )
               .appendTo( 'body' );

        var init_tooltip = function()
        {
            if( $( window ).width() < tooltip.outerWidth() * 1.5 )
                tooltip.css( 'max-width', $( window ).width() / 2 );
            else
                tooltip.css( 'max-width', 340 );

            var pos_left = target.offset().left + ( target.outerWidth() / 2 ) - ( tooltip.outerWidth() / 2 ),
                pos_top  = target.offset().top - tooltip.outerHeight() - 20;

            if( pos_left < 0 )
            {
                pos_left = target.offset().left + target.outerWidth() / 2 - 20;
                tooltip.addClass( 'left' );
            }
            else
                tooltip.removeClass( 'left' );

            if( pos_left + tooltip.outerWidth() > $( window ).width() )
            {
                pos_left = target.offset().left - tooltip.outerWidth() + target.outerWidth() / 2 + 20;
                tooltip.addClass( 'right' );
            }
            else
                tooltip.removeClass( 'right' );

            if( pos_top < 0 )
            {
                var pos_top  = target.offset().top + target.outerHeight();
                tooltip.addClass( 'top' );
            }
            else
                tooltip.removeClass( 'top' );

            tooltip.css( { left: pos_left, top: pos_top } )
                   .animate( { top: '+=10', opacity: 1 }, 50 );
        };

        init_tooltip();
        $( window ).resize( init_tooltip );

        var remove_tooltip = function()
        {
            tooltip.animate( { top: '-=10', opacity: 0 }, 50, function()
            {
                $( this ).remove();
            });

            target.attr( 'title', tip );
        };

        target.bind( 'mouseleave', remove_tooltip );
        tooltip.bind( 'click', remove_tooltip );
    });
    });

I created a function.php for the child theme that has the code only called to on this specific page:

<?php
    if ( !function_exists( 'tool_tips' ) ) {
    function tooltips() {
    if ( is_page( 'services' ) ) {
    wp_enqueue_script( 'tooltips', get_stylesheet_directory_uri() . '/js/tooltips.js', '', '1.0', true );
    }
    }
    }
    add_action( 'wp_enqueue_scripts', 'tooltips' );

    ?>

Like I stated earlier, it has been functioning the past few weeks with no issues (I even checked it over this past weekend) and today I noticed it stopped working.

I am very new to Javascript and not sure how to troubleshoot this problem.

Is there a way to see if other scripts could be interfering?

Thank you very much.