PDF not full width on first time load

I m loading the PDF into a popup. Please notice that on the initial load, the PDF does not size to the popup but does if you resize the browser window.

1. Scroll down to the area where you see “site maps/floor plans”
2. Click the 1615 or 1617 rectangle (its an SVG)
3. Notice the popup shows the PDF but the PDF does not fill the width of the popup
4. resize the browser and everything resizes so the PDF fits perfectly
5. Subsequent loads also work so you will need to refresh the page each time to recreate the issue.

Is there a way to call resize in javascript when the popup loads so it always fits or some other work around?

Thanks

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