Add Language Translate Drop Down Blogger

1.Log in to your dashboard--> layout- ->Page Elements

2.Click on 'Add a Gadget' on the sidebar.

3.Select 'HTML/Javascript' and add the code given below and click save.

<form name="google_tr">
<select class="dropdown" name="example" size="1" onChange="location=this.options[this.selectedIndex].value+'&u='+location.href"><option value="" selected>Select a language:</option><option value="http://www.google.com/translate_c?langpair=en|es">Español</option><option value="http://www.google.com/translate_c?langpair=en|de">Deutsche</option><option value="http://www.google.com/translate_c?langpair=en|fr">Français</option><option value="http://www.google.com/translate_c?langpair=en|it">Italiano</option><option value="http://www.google.com/translate_c?langpair=en|pt">Português</option><option value="http://www.google.com/translate_c?langpair=en|ar">Arabic</option><option value="http://www.google.com/translate_c?langpair=en|zh-CN">Chinese</option><option value="http://www.google.com/translate_c?langpair=en|ja">Japanese</option><option value="http://www.google.com/translate_c?langpair=en|ko">Korean</option><option value="http://www.google.com/translate_c?langpair=en|ru">Russian</option></select></form>

Now you are done.Look at the picture below.