ajaxWDwx.js error?

On my new webpage i use the ajaxWdwx.js script to show variables on some places.

www.hetweerinboskamp.nl

But not on all places i use the testtags variables. I only use this line.

Now my problem:
Especially when i reload (CTRL-F5) the page, some places are empty. When i press F5 again everything works ok.
This problem performs not always.

I already packed the ajaxWDwx.js. But that did not help.

Perhaps there is a solution for this problem?

Maybe its not the right solution.

Reload every 3 seconds. Now its works ok.

var reloadTime = 3000; // reload AJAX conditions every 5 seconds (= 5000 ms)