Are 5 blocking JS scripts with different versions necessary?

Using Google PageSpeed Insights, I noticed 5 blocking Supersized JS scripts:

1. http://www.xxxx.com/wp-content/plugins/wp-supersized/js/jquery.easing.min.js?ver=1.3
2./wp-supersized/js/jquery.easing.compatibility.js?ver=1.0
3./wp-supersized/js/jquery.animate-enhanced.min.js?ver=0.75
4./wp-supersized/js/supersized.3.2.7.min.js?ver=3.2.7
5./wp-supersized/theme/supersized.shutter.min.js?ver=3.5.2

Why the different JS versions? and can the calls be combined in 1 to increase the PageSpeed?

Thanks!

http://wordpress.org/plugins/wordpress-form-manager/

http://wordpress.org/plugins/wp-supersized/