nice js snippets

gistfile1.js

/*-- to detect mobile size in js --*/
/* credit: http://bricss.net/post/22198838298/easily-checking-in-javascript-if-a-css-media-query-has */
function isMobileSize() {
    var size = window.getComputedStyle(document.body, ':after').getPropertyValue('content');
    return size.indexOf('mobile') != -1;
}
/*
@media (max-width: 767px)
{
    body:after
    {
        content: 'mobile';
        display: none;
    }
}
*/

/*-- rel=autoPostBack on select boxes using jQuery --*/
$('FORM SELECT[rel*=autoPostBack]').change(function () {
    $(this).parents('form').submit();
});