(function ($) {
	Drupal.node_edit_protection = {};
	var click = false; // Allow Submit/Edit button
	var edit = false; // Dirty form flag

	Drupal.behaviors.nodeEditProtection = {
		attach: function (context) {
  			// If they leave an input field, assume they changed it.
  			$(".node-form :input").each(function() {
				$(this).blur(function() {
					edit = true;
				});
			});

 	 		// Let all form submit buttons through
  			$(".node-form input[type='submit']").each(function() {
   				$(this).addClass('node-edit-protection-processed');
		 		$(this).click(function() {
					click = true;
					
   			 	});
 	 		});
  
			// Catch all links and buttons EXCEPT for "#" links
  			$("a, button, input[type='submit']:not(.node-edit-protection-processed)").each(function() {
  	  			$(this).click(function() {
					// return when a "#" link is clicked so as to skip the window.onbeforeunload function
    	  				if(edit && $(this).attr("href") != "#") {
						return 0;
    	  				}
  	  			});
  			});

			// Handle backbutton, exit etc.
			window.onbeforeunload = function() {
				if (edit && !click) {
					click = false;
					return (Drupal.t("You have unsaved changes in this form. Are you sure you want to leave this page before clicking Save?"));
				}
			}	
		}
	};
})(jQuery);
;