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String replace, caps insensitive... what's a better option?

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I just found code that does this:

			orig = orig.replace( "<br>", "<br>" );
			orig = orig.replace( "<BR>", "<br>" );
			orig = orig.replace( "<bR>", "<br>" );
			orig = orig.replace( "<Br>", "<br>" );

I see why it's done this way (to encompass any caps variation on the BR) but since .replace() will only get the first instance, this is just bad all the way around. Also, there's no way to do a toLowerCase() because that will mess up the rest of the string.


Is there some sort of JS regex way to replace all instances of <br> regardless of the caps? 



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