Asp.net cross-page postback

[BobbyStrain]

I have an ASP.NET AJAX site using a Master Page where a first page executes a cross-page postback to a second page. The first page has an AJAX update panel that contains the input and results. The second page receives the input and some output and displays more results. I have a rather crude way to achieve this. I use a button outside the update panel to first postback the whole page to update it. A second button then is used to call the second page thus: onClient_Click="window.document.forms[0].target='_blank';" PostBackUrl = "page2.aspx" The second page opens in a new tab. I want a new window, but can't seem to achieve this. Also, when returning to the first page, the user must refresh it through the browser, then it becomes active again. I would like this to happen without user actions. I can't find the answer anywhere. The actions I want to achieve is to have one button to click that posts-back the first page then loads the second page in a new window. On return to the first page, I want it to refresh in the state that it was before the cross-page postback without user interaction. I appreciate help and advice. There must be some way that this can be achieved by calling one or more javascript functions that do this with a single click. I can use javascript, but I am a novice. Snippets are difficult for me to interpret. Thanks Bobby