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Thread: page postback and scrollTop (issue in FF)

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  1. #1
    Join Date
    Jun 2009
    Posts
    3

    page postback and scrollTop (issue in FF)

    Hi,

    I have got a DIV with a scroll ( overflow: scroll) in an aspx page and when page is post back the scroll is reset to top position. So I try to set back to the position before the post back, but I found an issue in FF.

    (I remove all the logic to reproduce this issue)

    Basically I register a function on the AJAX end request:

    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(siteTreeEndRequest);

    In this functionI try to set the scroll of the div

    var t = document.getElementById(tmp);
    t.scrollTop = 250;

    The div is long enough (for this example) and this code working fine in IE, so the div scroll to 250 and if I try to read t.scroll (with a button after the page has finised reloading), it returns 250. In FF, it scrolls to 45, but if I try less than 45 it scrolls fine (so if I set t.scrollTop = 30; then it scrolls to 30).

    What I found is if I put an alert() before it works fine in FF as well!!

    alert();
    var t = document.getElementById(tmp);
    t.scrollTop = 250;

    Someone said to put "px" (t.scrollTop = 250 + "px"), but it isnt working at all.

    Could somebody help me?

    Thank you

  2. #2
    Join Date
    Jun 2009
    Posts
    3

    update

    I found that is something related with the css.. I was trying to reproduce in a test page and only when I put my web.config it started not working.
    So the only difference is <pages theme=".."> in web.config, so with simple text/links with no CSS is's working fine even in FF.
    I'm working on understand why at the moment but if someone has any idea...

    thank you

  3. #3
    Join Date
    Jun 2009
    Posts
    3

    attachments

    I attached the aspx page, I you try without

    <style type="text/css">
    a
    {
    font-size: 12px;
    }
    </style>

    it's working fine in IE and FF, but if you put it back in FF is not setting the right position. If you put an alert before

    var t = document.getElementById("divContainer");
    t.scrollTop = scrollX;

    it's working even in FF.

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