Deregister unwanted scripts in WordPress

if ( !is_admin()) {
    add_action( 'wp_print_scripts', 'my_init' ); 

    function my_init() {
    	if(is_home() || is_archive() || is_search()) {
        wp_deregister_script( 'l10n' );
        wp_deregister_script( 'jquery' ); }
    }
}
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Using hover function in Jquery

I have learned how to use a hover function in jquery.

<script type="text/javascript">
$(document).ready(function(){
$('Id or class name of a div').hover(function(){
$('Id or class name of a div(same name)').css('opacity','1');
},function(){
$('Id or class name of a div(samename)').css('opacity','0');
});
});
</script>