Please help,

I am using this MooTools datepicker: but with the latest MooTools version: MooTools 1.4.5

I click on my textbox and select a date but the calendar stays on the screen and I cannot see my submit button.

my FireFox console gave the following error:

TypeError: dp.container.remove is not a function

else if (dp.container) dp.container.remove();

here is the relevant Javascript code:
/* Remove the calendar from the page */
	remove: function(dp){
		$clear(dp.interval); = false;
		if (window.opera) dp.container.empty();
		else if (dp.container) dp.container.remove();
		dp.calendar = false;
		dp.container = false;