Problem with cart and dual prices

[risolohyna]

Hi

I have a problem with displaying dual prices and adding something to a shopping cart.

In our country (Slovak Republic) we have to display dual prizes (€, Sk) ..
we made a change in classes/tool.php - displayPrice funtion, case 2:

$ret = number_format($price, $c_decimals, ',', ' ').$blank.$c_char.'
'.number_format($price*30.1260, $c_decimals, ',', ' ').$blank.'Sk'; 

but, the problem is:
when customers add something in a cart, instead of breakline is displayed only

.. the

entity is ignored and it displayed only text ..

when I refresh the page or turn of AJAX for the shopping cart, everything is OK ..

Can you suggest me something to fix this problem? thanks

// screenshot of this problem is here:
screenshot - shopping cart with

sorry for the mistakes, I am a beginner ..