Scroll top after popping up a new window.

This question already has an answer here:

Check if element is visible after scrolling 38 answers

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Because You open a new window, js is loaded second time and click event wasn't executed. You can use something like:

$(document).ready(function () {
    if (window.location.href.indexOf("my_url") > -1) {
       $('html,body').animate({ scrollTop: "0px" }); // or 150px
    }
});

or use some global variable for setTimeout and break it after execution.

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your code is runnning in the parent window, not in the pop up one. If you can´t put int in the pop up target, try scrolling by reference adding "#btnLogin_div" top the url like this:

$(document).ready(function () {
 $('.popup').click(function(event) {
   event.preventDefault();
window.open
("https://www.spmet.aspx", 
 "popupWindow", "width=1400,height=600,scrollbars=yes");
    setTimeout(function() { scrollTo(0,150) }, 1000);
  });
 });

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Since you are opening a new window; the js on your old page is not used; you have to add the scroll js on the new page you are loading. This is good cause otherwise I could have you go to a page and phantom click on stuff, which would not be good.

You can get around it by opening the page in an iframe; where you can scroll your iframe window.

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