How to load URL from .txt file and use URL to load image?

programming flash
1

txtfile (imageurl.txt):

img=http://www.image.com/images/home_wedding_pic.jpg

swf:

loadVARS = new LoadVars();
loadVARS.onLoad = function(success) {
	if (success) {
		img_container.loadMovie(this.img);
	} else {
		trace("FAILED");
	}
};

loadVARS.load("imageurl.txt");

This works when I hit ctrl+enter to test within the flash GUI, but not when I open the swf from my computer. wtf!

However, having a flash file with ONLY the following:

img_container.loadMovie("http://www.image.com/images/home_wedding_pic.jpg");

This works in flash and even from the swf itself! Somethings fishy with the loadvars method.

Using CS3, AS2.0. Thanks!