function resetIosScreen() {
if ( window.orientation == 90 || window.orientation == -90 ) {
userHeight = window.screen.width;
} else {
userHeight = window.screen.height;
}
$(".before").height(userHeight - 70);
$(".prompt").height(userHeight);
}
if (/iPhone/.test(navigator.userAgent)) {
resetIosScreen();
}
$(window).on("orientationchange",function(){
resetIosScreen();
});