Function equals( s1, s2 )

Description:
Determines whether two strings are equal. Note you should use this function instead of s1==s2, which can (for technical reasons) return false even if the strings are the same.
Parameters:
s1 (String)
first string
s2 (String)
second string
Return Value (boolean):
true if s1 and s2 are both blank, or have the same content
Signature:
boolean equals(String, String)