Importing (and analyzing) a raw text file

I have to import a (long) text with that structure (this is the 5 first lines of the text)
The text will be often updated, so I can’t edit it…it should be imported as it is


[Category]
item1=big / red
item2=thin / blue
item3=big / blue
item4=thin / yellow

I’ve understood that in Flash I must use the LoadVars() object:


loadText = new LoadVars();
loadText.load("test.txt");
loadText.onLoad = function() {
 trace(this)
};

If I import the text like that, here’s the result in the output window:


%5BCategory%5D%0D%0Aitem1=big%20%2F%20red%0D%0Aitem2%3Dthin%20%2F%20blue%0D%0Aitem3%3Dbig%20%2F%20blue%0D%0Aitem4%3Dthin%20%2F%20yellow&onLoad=%5Btype%20Function%5D

So, my question is:
How should I proceed to have that properly filtered and put in an array?
Thanks very much!