Asp.Net Textbox Numeric Only From Javascript

Write The folloeing Javascript

function NumericOnly()
var key = window.event.keyCode;
if((key < 46 || key > 57))//|| key != 46)
window.event.returnValue = false;

And Call  NumericOnly() javascript funvtion on  Key Press of TextBox

<asp:TextBox ID=”txtPhone” runat=”server” OnKeyPress=”NumericOnly()” MaxLength=”14″></asp:TextBox>


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