Fix for issue 1826 - Nightly build - dialog box no longer rounded cor…

…ners

- Don't set a default value for the 'role' option to loadPage() and changePage(). Instead, rely on the role attribute that is on the element.

- Fixed an error that was happening when a hash change involves going from a dialog back to another dialog. I had recently made changes that assumed the 'to' variable was always going to be a url string, but it turns out in the dialog back to dialog case, it is an actual jQuery collection.

js/jquery.mobile.navigation.js

@@ -671,7 +671,7 @@
 		type: "get",
 		data: undefined,
 		reloadPage: false,
-		role: "page",
+		role: undefined, // By default we rely on the role defined by the @data-role attribute.
 		showLoadMsg: true,
 		pageContainer: undefined
 	};
@@ -780,7 +780,7 @@
 		//
 		// XXX_jblas: We need to remove this at some point when we allow for transitions
 		//            to the same page.
-		if( active && active.page[0] === toPage[0] ) {
+		if( fromPage && fromPage[0] === toPage[0] ) {
 			isPageTransitioning = false;
 			mpc.trigger( "changepage" );
 			return;
@@ -870,7 +870,7 @@
 		reverse: false,
 		changeHash: true,
 		fromHashChange: false,
-		role: "page",
+		role: undefined, // By default we rely on the role defined by the @data-role attribute.
 		duplicateCachedPage: undefined,
 		pageContainer: undefined
 	};
@@ -1022,7 +1022,7 @@
 						$link.jqmData( "back" ),
 
 			//this may need to be more specific as we use data-rel more
-			role = $link.attr( "data-" + $.mobile.ns + "rel" ) || "page";
+			role = $link.attr( "data-" + $.mobile.ns + "rel" ) || undefined;
 
 		$.mobile.changePage( href, { transition: transition, reverse: reverse, role: role } );
 		event.preventDefault();
@@ -1068,7 +1068,8 @@
 
 		//if to is defined, load it
 		if ( to ) {
-			$.mobile.changePage( ( path.isPath(to) ? "" : "#" ) + to, { transition: transition, changeHash: false, fromHashChange: true } );
+			to = ( typeof to === "string" && !path.isPath( to ) ) ? ( '#' + to ) : to;
+			$.mobile.changePage( to, { transition: transition, changeHash: false, fromHashChange: true } );
 		}
 		//there's no hash, go to the first page in the dom
 		else {