var rspeed = (Math.random()/3)+0.6,
    rtext = 'transform ' + rj + 's ease-in-out';

$('#tile').css( '-webkit-transition',rtext).css( '-moz-transition',rtext).css( '-ms-transition',rtext).css( '-o-transition',rtext).css( 'transition',rtext);
$('#tile').css( 'transform','rotateY(180deg)');