how can i add to this code a previous page link using javascipt.

Hello i need to add to this javascipt condition back to previous page or history -1 and i need to check if the previous page was not in the domain get back to index page please give mthe full code based on this query below
if ( notification == "b")
	//add here the navigation details 			

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Hisotry object  - history.previous method
previous Property
The previous property contains the complete URL of the previous element in the History list, and is the equivalent of the URL the user would go to if they selected Back in the Go menu.
Syntax: history.previous

AudiomindsAuthor Commented:
thanks ASPSQLServerCOM can anyone help add the code to my scipt showed above as i am a newbie with these stuff .

var url;
window.location = ""
are you looking to disable to back button? there are couple of ways to do that too

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