You can change options from javascript using:
jQuery('#container').holest_carousel('option','<option_name>',value);
effect of each change are live. See "All options" on this page:
www.holest.com/example.html
You probably want to change radius on window re-size, so script would be:
<script type="text/javascript">
jQuery(document).ready(function(){
jQuery(window).resize(function(){
var new_radius = parseInt((jQuery(window).width() / 2) * 0.7);
jQuery('#container').holest_carousel('option','radius',new_radius);
});
});
</script>
you can place that in head section of index.php of template.
To make container stretch use:
#container{
width:100%!important;
}