View slideshow: how to set click on image for next slide

Hi,
I have found my way to make this.
Using the Top slideshow widget I have showed the "Controls".
Now on the Top of your image you have "Next"-"Pause-Play"-"Previous" text.
Using the CSS I have hided "Next" and"Pause-Play" link text and I have reformatted "Previous" to cover the image.
Is moved on the left 100px so the text go over black background, it is set #000 and became invisible.

Something like this:
/*Controlli next-previous */
.views-slideshow-controls-text-previous {
position:absolute;
display:none;
}
.views-slideshow-controls-text-pause {
position:absolute;
display:none;
}
.views-slideshow-controls-text-next a{
position:absolute;
display:block;
width:900px;
height:650px;
padding:10px;
margin-left:-100px;
color:#000;
}

Maybe you can use height:100%; but I'm not sure it's working becouse the position is absolute.

I don't know how to solve it