Help with javascript expression to prevent input values

I have a validation script in my application to prevent the input of certain email addresses.
It works if the domain in entered in the case thats expressed, however I need to make it non-case sensitive

var strRuleMessage = 'Forbidden Email Address Extension'; 
var strFieldData = Values("field_emailaddress"); 
re =/@gmail|@hotmail|@otherdomains/; 
r = strFieldData.match(re); 
if (r) 
Valid = false; 
ErrorStr = strRuleMessage; 

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Its line 3 that needs the ability to not allow someone to enter as the validation only works if someone enters

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re =/@gmail|@hotmail|@otherdomains/i;

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MimUKAuthor Commented:
As simple as that... Doh
Many thanks.
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