Javascript Numeric Only TextBox Validation

function NumericOnly()
{
var key = window.event.keyCode;

if ( (key > 47 && key < 58) )
return;
else
// If it was not, then dispose the key and continue with entry
window.event.returnValue = null;
}

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Call This numeric Function On TextBox on KeyPress Event

OnKeyPress=”NumericOnly()”

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