1jQuery(function(){
2
3jQuery('#eshop_count').change(function(){
4    var count = jQuery('#eshop_count option:selected').val();
5    var usd = (jQuery('#eshop_price_usd').data('unitprice') * count).toFixed(2);
6    jQuery('#eshop_price_usd').text(usd);
7    var eur = (jQuery('#eshop_price_eur').data('unitprice') * count).toFixed(2);
8    jQuery('#eshop_price_eur').text(eur);
9    var btc = (jQuery('#eshop_price_btc').data('unitprice') * count).toFixed(3);
10    jQuery('#eshop_price_btc').text(btc);
11    jQuery('#eshop_total').val(btc);
12});
13
14});
15