This syntax in a remote script called from the head will add the new script before the body is displayed.
You could easily call it onload instead, if you want the page up as quickly as possible.
I have 2 javascript file : IE.js and FF.js
If the browser is IE i want to use the IE.js file.
or if the browser is Firefox ill use the FF.js
the functions on IE and FF are the same but different in some codes not supported by either browser.
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