jQuery - run code after scripts are loaded

In my header I load scripts (I keep this scripts on my server, original links are added here just for you):

<script src="http://jscrollpane.kelvinluck.com/script/jquery.mousewheel.js"></script>
<script src="http://jscrollpane.kelvinluck.com/script/mwheelIntent.js"></script>
<script src="http://jscrollpane.kelvinluck.com/script/jquery.jscrollpane.min.js">

Then on my footer I'm executing some code:

$(document).ready(function() {
            $(function(){
                $('.scroll-pane').load().jScrollPane();
            });
            numOfPics = $('#gallery-wraper img').size();
            widthOfAll = 0;
            $('#gallery-wraper img').each(function() {
                imgWidth = $(this).width() + 20;
                widthOfAll += imgWidth;
            }); // end of each
            $("#gallery-container").load().css("width",widthOfAll);

            galleryPosition = $(window).height() / 2 - 250;
            $("#gallery").css("margin-top", galle开发者_开发问答ryPosition);
});// end of document.ready()

I want it yo display my images horizontally and put it inside jScrollPane (http://jscrollpane.kelvinluck.com/) But it displays my images horizontally after refresh only (or even after a few page refreshes in chrome). It looks like it tries to execute my code before page content is generated (its a wordpress theme) or before scroll libraries are loaded. What is wrong with my logic here? I'm using document.ready() so why it acts this way?

Try calling it after the page loads

$(document).ready(function() {
  $(function(){
      $('.scroll-pane').load().jScrollPane();
  });
  function updateCSS() {
    numOfPics = $('#gallery-wraper img').size();
    widthOfAll = 0;
    $('#gallery-wraper img').each(function() {
        imgWidth = $(this).width() + 20;
        widthOfAll += imgWidth;
    }); // end of each
    $("#gallery-container").load().css("width",widthOfAll);

    galleryPosition = $(window).height() / 2 - 250;
    $("#gallery").css("margin-top", galleryPosition);
  }

  setTimeout('updateCSS()',100);
});// end of document.ready()

I am not sure if this is your issue or not, but try the $(window).load event instead of $(document).ready. $(window).load executes after all libraries, images, frames, ect have loaded instead of after your HTML code loading (as your libraries and images may still be loading).

http://4loc.wordpress.com/2009/04/28/documentready-vs-windowload/