how to automatically open Shadowbox on window/page load

Question

Me using Shadowbox and its working fine. But I dont like to open it after clicking on image (href), need to open it automatocally on pageload.

What can I change to do it?

Here is HTML

 <div id="images">
                    <a href="resources/certified_training/1.png" rel="shadowbox[certifiedtraining];width=510;height=372">Image -1</a>
                    <a href="resources/certified_training/2.png" rel="shadowbox[certifiedtraining];width=510;height=372">Image -2</a>
                    <a href="resources/certified_training/3.png" rel="shadowbox[certifiedtraining];width=510;height=372">Image -3</a>
                    <a href="resources/certified_training/4.png" rel="shadowbox[certifiedtraining];width=510;height=372">Image -4</a>
                    <a href="resources/certified_training/5.png" rel="shadowbox[certifiedtraining];width=510;height=372">Image -5</a>
                </div>

And here JavaScript

window.onload = function () {
             loadShadowbox();
         };

function loadShadowbox() {
Shadowbox.init({
            showOverlay: false
        });

        window.Shadowbox.setDimensionsOld = window.Shadowbox.setDimensions;
        window.Shadowbox.setDimensions = function (height, width, maxHeight, maxWidth, topBottom, leftRight, padding, preserveAspect) {
            var S = window.Shadowbox;
            window.Shadowbox.setDimensionsOld(height, width, maxHeight, maxWidth, topBottom, leftRight, padding, preserveAspect);
            window.Shadowbox.dimensions.top = 340;
            window.Shadowbox.dimensions.left = 430;
            return window.Shadowbox.dimensions;
        }

Answer 1

You atually initialize a Shadowbox on window load, but not opening it. Once done, you end the function loadShadowbox, Instead open the Shadowbox towards the end.

EDIT:

I have modified the code. I actually missed a closed brace.

function loadShadowbox() {
    Shadowbox.init({
        showOverlay: false
    });

    window.Shadowbox.setDimensionsOld = window.Shadowbox.setDimensions;
    window.Shadowbox.setDimensions = function (height, width, maxHeight, maxWidth, topBottom, leftRight, padding, preserveAspect) {
        var S = window.Shadowbox;
        window.Shadowbox.setDimensionsOld(height, width, maxHeight, maxWidth, topBottom, leftRight, padding, preserveAspect);
        window.Shadowbox.dimensions.top = 340;
        window.Shadowbox.dimensions.left = 430;
        return window.Shadowbox.dimensions;
    }

window.Shadowbox.open();    //Add this line
}  //This is where your `function loadShadowbox()` ends.