toast.js

var toast=function(heading, msg){
	$("<div class='ui-loader ui-overlay-shadow ui-body-e ui-corner-all'><h3>"+heading+"</h3><p>"+msg+"</p></div>")
	.css({ display: "block", 
		opacity: 0.90, 
		position: "fixed",
		padding: "7px",
		"text-align": "center",
		width: "270px",
		left: ($(window).width() - 284)/2,
		top: $(window).height()/2 })
	.appendTo( $.mobile.pageContainer ).delay( 1500 )
	.fadeOut( 400, function(){
		$(this).remove();
	});
}

This does not work for me. When I try to use it I get the following error:

0x800a138f - JavaScript runtime error: Unable to get property 'pageContainer' of undefined or null reference