I am trying to hide widgets from blogger using checkboxes.
Relevant part of the code:
<b:section-contents id='sidebar-left-1'>
<b:widget id='HTML2' locked='false' title='' type='HTML'>
<b:includable id='main'>
<b:if cond='document.Testform.Art[0].checked == true'>
<!-- only display title if it's non-empty -->
<b:if cond='data:title != &quot;&quot;'>
<h2 class='title'><data:title/></h2>
<div class='widget-content'>

<b:include name='quickedit'/>
Relevant part of the code somewhere else:
<form name="Testform" action="">
<input type="checkbox" name="Art" value="SHTML2" /> Show HTML 2
<input type="checkbox" name="Art" value="SHTML1" /> Show HTML 1
The problem is: It does not work (even after reloading the site while the box remains checked)
Compared with otheres here I am quite new to HTML etc and hope you can help me out on this and show me what I did wrong.
Friendly greets,