WP Not Functional After….HELP!

So i put in a code in my paralex theme functions folder so i can have the video start playing with the mouse hover.

When i did that, my site went down and turned into a blank page and so is everything in wordpress.

That includes the appearance, pages, dashboard, everything!

I tried hitting the back button and i removed the code and hit update file but ti didnt help.

here is the code i put in:

add_action(‘wp_enqueue_scripts’, ‘jquery_method’);
function jquery_method() {
wp_deregister_script( ‘jquery’ );
wp_register_script( ‘jquery’, ‘https://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js’);
wp_enqueue_script( ‘jquery’ );
}

Can someone please help me asap!