urldecode problem :(

HI, I'm using "urldecode" function to decode string from "getenv("QUERY_STRING");", but part of it is in cyrrilic (windows-1251) charset. I have following code: $a="%D1%81%D1%87%D0%B5%D1%82%D0%BE%D0%B2%D0%BE%D0%B4%D0%BD%D0%B0+%D0%BA%D1%8 A%D1%89%D0%B0"; $b="%d1%ee%f4%f2%f3%e5%f0"; echo "a=" . urldecode($a); echo "<br>b=" . urldecode($b); On the second string it works correctly, but on first it don't. These two vars are getted from two different pages ( as refferers ). I think the problem could be in encoding used in two pages. Can someone help me ? Thanks, Rosen