Generalized delete page function

Prior implementation did not handle case n === page

Author: Kenneth Glassey

jspdf.js

@@ -18,6 +18,7 @@
  *               2014 James Makes, https://github.com/dollaruw
  *               2014 Diego Casorran, https://github.com/diegocr
  *               2014 Steven Spungin, https://github.com/Flamenco
+ *               2014 Kenneth Glassey, https://github.com/Gavvers
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -711,6 +712,15 @@ var jsPDF = (function(global) {
 			}
 			events.publish('addPage', { pageNumber : page });
 		},
+		_deletePage = function( n ) {
+			pages.splice(n, 1);
+			pagedim.splice(n, 1);
+			page--;
+			if (currentPage > page){
+				currentPage = page;
+			}
+			this.setPage(currentPage);
+		},
 		_setPage = function(n) {
 			if (n > 0 && n <= page) {
 				currentPage = n;
@@ -1022,16 +1032,8 @@ var jsPDF = (function(global) {
 			}
 			return this;
 		};
-		API.deletePage = function(targetPage) {
-			for (var i=targetPage; i< page; i++){
-				pages[i] = pages[i+1];
-				pagedim[i] = pagedim[i+1];				
-			}
-			page--;
-			if (currentPage > page){
-				currentPage = page;
-			}
-			this.setPage(currentPage);
+		API.deletePage = function() {
+			_deletePage.apply( this, arguments );
 			return this;
 		};
 		API.setDisplayMode = function(zoom, layout, pmode) {