query calc

Hi guys,

I'm trying to find a way how to prevent users from insert string to price textbox so I found something like this:
Actually it works fine, the only issue is users can't insert dot as well just numbers

 $("#Price").keypress(function (e) {
                //if the letter is not digit then display error and don't type anything
                if (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57)) {
                    //display error message
                    //$("#error").html("Number Only").show().fadeOut("slow");
                    return false;

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Moti Mashiah.NET DeveloperAsked:
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Moti Mashiah.NET DeveloperAuthor Commented:
Solved the issue:

Here is the solution:
 $("#Taxt, #Price, #Amountpaid").keypress(function (event) {
                return isNumber(event, this)

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 function isNumber(evt, element) {

            var charCode = (evt.which) ? evt.which : event.keyCode

            if (
                (charCode != 45 || $(element).val().indexOf('-') != -1) &&      // “-” CHECK MINUS, AND ONLY ONE.
                (charCode != 46 || $(element).val().indexOf('.') != -1) &&      // “.” CHECK DOT, AND ONLY ONE.
                (charCode < 48 || charCode > 57))
                return false;

            return true;

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