title: how to fill up numbers in a form field via a popup key pad(using Javascript/AJAX)
body: <p>I have a small project, wherein I need to develop a keypad with all the digits+backspace+decimal (all as buttons). These digits when clicked should populate a form field (say a text box). This keypad should be located next to the form field as a link.</p>
  
  <p>The keypad should be preferably Javascript/AJAX. Also the keypad routine should have a close button in order to minimize the popup keypad. (It's very much similar to a calendar control which we see in ticketing websites.)</p>
  
  <p>To round up the keypad routine does nothing fancy but to just populate the form field, when the digits (buttons) are clicked.</p>
  
  <p>I need help with coding the keyboard routine. How do I design the javascript? How to include the buttons (for the digits+decimal+backspace in the file)? How to code the part where when the buttons are clicked, then that value is showed in the form field?</p>
  
  <p>Any help is greatly appreciated.</p>
  
  <p>Thanks</p>