Add below script in <head> .... </head> section in master page :
<script type="text/javascript" src="http://demo.haacked.com/hide-anchor/lib/jquery-1.3.2.min.js">
</script>
<script type="text/javascript">
$(function() {
var $spans = $(".menu-horizontal span");
var val = "My Content";
if (val) {
//alert(val);
$spans.filter(':contains(' + val + ')').show();
$spans.filter(':not(:contains(' + val + '))').hide();
} else {
$spans.show();
//alert("m here");
}
});
</script>
