Apparently, <script> tags are not loaded in a deterministic order on IE and Webkit-based browsers.

This page tests this by adding 100 <script> tags to a DocumentFragment and then appending that DocumentFragment to document.documentElement.

Each <script> tag points to to scriptdeterminism.php?num=NNN, where each value of NNN is a number from 1 to 100. Each request should load a small amount of JavaScript that pushes its NNN value onto a global RESULTS array. A timeout is scheduled 10 seconds in the future to assert whether all 100 values have been loaded, in order.