I have a string in URL encoded format. How do I unencode?

I'm sure there is a single command for this but I can't find it, so my workaround is a long list of 'replace' commands :-(
                vari = vari.replace(/%22/g,"'");
                vari = vari.replace(/%20/g," ");
                vari = vari.replace(/%3C/g,"<");
etc.
Help!!! How do I unencode  my URL encoded string?

http://livedocs.adobe.com/flex/3/langref/package.html#unescape()
try this link..
unescape(); function.. it is a global function
hope this helps,
BaBo,

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