added ability close current popover in document

README.rdoc

@@ -103,6 +103,10 @@ You can programmatically open and close a popover by using the following:
 
     $('#button').trigger('hidePopover'); 
 
+To close the currently open popover, for example from the cancel button of a popup dialog, do the following:
+
+    $(document).trigger('hidePopover');
+
 == Popover styling
 
 The popover style provided in popover.css is a basic style to mimic the iPad popover look & feel but you can style it anyway you like. 

jquery.popover.js

@@ -30,7 +30,7 @@
 
 	  settings.triangle$ = $('.triangle', settings.popover$);
 
-	  // Document click closes active popover
+	  // document click closes active popover
 	  $.fn.popover.openedPopup = null;
 	  $(document).bind("click", function(event) {
 	    if ($.fn.popover.openedPopup != null
@@ -40,6 +40,11 @@
 	    }
 	  });
 
+		// document hidePopover causes active popover to close
+		$(document).bind("hidePopover", function(event) {
+			$.fn.popover.openedPopup.trigger('hidePopover');
+		});
+
 		// keyboard callback
 		function keyDown(event) {
 			if (!event.altKey && !event.ctrlKey && !event.shiftKey) {