Uncheck the checked checkbox when clicked in javascript

The problem: When I click on checked checkbox they should get unchecked.

jsp page:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<script type="text/javascript" src="abc.js"></script>
<script type="text/javascript" src="dat.gui.min.js"></script>

<body onload="gui();">


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var gui_control = function () {


function gui()
var gui_controls=new gui_control();
var gui = new dat.GUI({autoPlace:true}); 

gui.add(gui_controls,'option1').listen().onChange(function(value) { gui_controls.option1 = true; gui_controls.option2 = false; gui_controls.option3 = false; } );
gui.add(gui_controls,'option2').listen().onChange(function(value) { gui_controls.option1 = false; gui_controls.option2 = true; gui_controls.option3 = false; } );
gui.add(gui_controls,'option3').listen().onChange(function(value) { gui_controls.option1 = false; gui_controls.option2 = false; gui_controls.option3 = true; } );

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Please download dat.gui.min.js from attachment.
Pradip ShenolkarAsked:
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Very hard to tell what you are trying to do but can't you do it with jquery or just plain javascript?
Pradip ShenolkarAuthor Commented:
No I can't use plain javascript or jquery.
I need to use dat.gui library
Ok, sorry I can't help you then.
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Pravin AsarPrincipal Systems EngineerCommented:
From the description of the problem, looks like you want only one value selected.
So instead of using checkbox control, can  you use radio control ??
In that case, you do not need have any javascript.
Robert SchuttSoftware EngineerCommented:
Finally found the correct way to do it I think:
function gui()

    var gui_controls=new gui_control();
    var gui = new dat.GUI({autoPlace:true});

    var gui_opt1 = gui.add(gui_controls,'option1');
    var gui_opt2 = gui.add(gui_controls,'option2');
    var gui_opt3 = gui.add(gui_controls,'option3');

    gui_opt1.onChange(function(value) { if (value) { gui_opt2.setValue(false); gui_opt3.setValue(false); } } );
    gui_opt2.onChange(function(value) { if (value) { gui_opt1.setValue(false); gui_opt3.setValue(false); } } );
    gui_opt3.onChange(function(value) { if (value) { gui_opt1.setValue(false); gui_opt2.setValue(false); } } );

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live example here: http://schutt.nl/ee/Q_28645759/

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Pradip ShenolkarAuthor Commented:
@Robert Schutt
 Thanks alot.
 It works as I wanted.
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