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		$("#formpesquisa input:checkbox").on('click', function() {
		  // in the handler, 'this' refers to the box clicked on
		  var $box = $(this);
		  if ($box.is(":checked")) {
		    // the name of the box is retrieved using the .attr() method
		    // as it is assumed and expected to be immutable
		    var group = "#formpesquisa input:checkbox[name='" + $box.attr("name") + "']";
		    // the checked state of the group/box on the other hand will change
		    // and the current value is retrieved using .prop() method
		    $(group).prop("checked", false);
		    $box.prop("checked", true);
		  } else {
		    $box.prop("checked", false);
		  }
		});