User is no longer logged in when switching between two websites
I have created two independent websites. For ex: XYZ Consulting and www.abc.com.
Now, assume one user is logged in the http://www.xyz.com and he switched from that website to www.abc.com by clicking the hyperlink.
At that time he needs to enter again his username and password. But I don't want to user to re-enter his login information again. That means login information(username and password) is same for both websites. For this
requirement what I code need write in my application. Can any body help me.
Thanks in advance.......