problems thumbnails slider with Safari and Chrome

I have change file slideViewerPro.js

with the indications but the problem persist with Safari and chrome; You can help me ? Thanks
www.accroissements-michel-sempey.fr

(indications
go to:
cms/modules/mod_hot_joomla_gallery/js/slideViewerPro.js
make bakup of file
change :

var pictWidth = container.find("img").attr("width");
var pictHeight = container.find("img").attr("height");

to

var pictWidth = 500;
var pictHeight = 320;

find the post where saw that, I think there some css values need to be changed.

thanks,

but the css of the template? or the css of the module? and what I change?

In the file

At the bottom there are this css entites:
mod_hot_joomla_gallery\tmpl\style.css

div#svwp0 ul {
margin:0;
padding:0;
list-style:none;
line-height:normal;
}

div#svwp0 ul li, div#thumbSlider0 ul li {
margin:0;
padding:0;
list-style:none;
background:none;
}

add fixed width and height to them. I can not know right vales that would work for you , you have to do proces of change-and-test