draw a specific page number

lib/ComicBook.js

@@ -479,14 +479,24 @@ function ComicBook(id, srcs, opts) {
 		// manually trigger the first load
 		preload(i);
 	};
+	
+	ComicBook.prototype.pageLoaded = function (page_no) {
+		return (typeof loaded[page_no-1] !== "undefined");
+	};
 
 	/**
 	 * Draw the current page in the canvas
-	 *
-	 * TODO: break this down into drawSinglePage() & drawDoublePage()?
-	 * TODO: if the current browser doesn't have canvas support, use img tags
 	 */
-	ComicBook.prototype.drawPage = function() {
+	ComicBook.prototype.drawPage = function(page_no) {
+		
+		// if a specific page is given try to render it, if not bail and wait for preload() to render it
+		if (typeof page_no === "number" && page_no < srcs.length) { 
+			pointer = page_no-1;
+			if (!this.pageLoaded(page_no)) {
+				this.showControl("loadingIndicator");
+				return;
+			}
+		}
 
 		var zoom_scale;
 		var offsetW = 0, offsetH = 0;