// INFO
//////////////////////////////////////////////////
// In your CSS file, add a rule to your media
// queries that applies some arbitrary CSS to an
// element.
//
// In this case, we've used:
// text-align: right;
//
// It's been applied to a empty DIV on the page.
//
// Then, simply check for that CSS change with jQuery.
//////////////////////////////////////////////////

$(document).ready(function() {
	if ( $("div#someDiv").css("text-align") === "right") {	
		$('body').prepend('Hello Mobile User');
	} else {
		// do nothing
	}
    
});