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(); 	});