price red trace - base price

[luisjmatias]

Hi I use joomla 2.5.9 and virtuemart 2.0.18a.
My web site http://188.93.230.45/~mundifle/
I can not bring up the red line above the initial price when a discount is applied.
I can not also show the initial price.
where it should apply the discounts?
Am I doing something wrong?