I made a JQuery function to calculate the amount including the tax. When I want to set a amount with cents I need to use a dot. It will be like 125.25 euro's. I would like to know how to calculate the amount including tax by using a comma.

here is my code:

    if($(#tax).val() == verlegd) { var tax= 0;  }

    else 

    { 

        var tax= parseInt($(#tax).val()); 

    }



    var taxCalc = parseInt(100+tax);

    var amount= parseFloat($(#amount).val());



    var amountinc = Math.round(((amount* taxCalc) / 100)*100)/100;

    if(!isNaN(amount)) 

    { 

        $(#amountinc).val(amountinc); 

    }

    else 

    { 

        $(#amountinc).val(unvalid number);

    }

}



$(#amount).keyup(function(){ updateTotalExc(); });

$(#tax).change( function(){ updateTotalExc(); });