static S hCheckBoxMultiSelect() {
  ret hscript([[
var lastChecked = null;

$(document).ready(function() {
    var $chkboxes = $('.chkbox');
    $chkboxes.click(function(e) {
        if(!lastChecked) {
            lastChecked = this;
            return;
        }

        if(e.shiftKey) {
            var start = $chkboxes.index(this);
            var end = $chkboxes.index(lastChecked);

            $chkboxes.slice(Math.min(start,end), Math.max(start,end)+ 1).prop('checked', lastChecked.checked);

        }

        lastChecked = this;
    });
});]]);
}