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overlay 

// Register Script
function overlay() {

	wp_register_script( 'snap.svg-min.js', 'js/snap.svg-min.js', false, false, false );

	wp_register_script( 'classie.js', 'js/classie.js', false, false, false );

	wp_register_script( 'modernizr.custom.js', 'js/modernizr.custom.js', false, false, false );

	wp_register_script( 'demo12.js', 'js/demo12.js', false, false, false );

}
add_action( 'wp_enqueue_scripts', 'overlay' );