How to check/uncheck the checkboxes in CheckBoxList using JQUERY

$(function(){
//on check of ist checkboxlist event do this create a new list except checked data in ist list.

// copy all data except checked in ist list
(
var tempSecListString = "<select id="secId">";

// for each data create a loop 
$("data").each(funtion(){
if(!$(this).is(:checked)){
tempSecListString + = "<option value=""+ $(this).val()+ ""></option>"
}
});
tempSecListString + = "</select>";
var $htmlElement = $(tempSecListString);
$("#secId").html($htmlElement);
)

});