bootstrap modal close not working code example

Example 1: bootstrap modal don't dismiss

<div class="modal fade" id="myModal" data-backdrop="static" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">

Example 2: bootstrap modal not close

$('#MymodalPreventScript').modal({
    		backdrop: 'static',
    		keyboard: false
		});