kind of web pages in android webview

I am using a webview to display a webpage. But the webview loads only websites like google, 开发者_运维技巧yahoo. It doesn even load a wikipedia pages. Any help will be appreciated Ty Abhi

EDIT code from comment:

webview= new WebView(this);
webview.getSettings().setJavaScriptEnabled(true);
webview.loadUrl("arthistoryguide.com/Mona_Lisa.aspx";); 

You may wanna try the mobile url "en.m.wikipedia.org/" than just http://en.wikpedia.org