Possible dodgy widget!

Be aware that the calendar widget seems to be corrupt your blog.  I added it to my website and it kept redirecting me to another site.

It shows this page

And then it won't let you get off the page without clicking one of the options, you will then be taken to this page

 

All you then need to do is remove the widget...if you can get back to your layout page...hope this helps and good luck!