//*** This code is copyright 2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
//*** Reuse or modification is free provided you abide by the terms of that license.
//*** (Including the first two lines above in your source code satisfies the conditions.)

//Returns the Rot13 equivalent of a string
String.prototype.rot13 = function(){
	var str = this.valueOf();
	var i,len,x,rot,tor;
	rot="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
	tor=['n','o','p','q','r','s','t','u','v','w','x','y','z','a','b','c','d','e','f','g','h','i','j','k','l','m','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','A','B','C','D','E','F','G','H','I','J','K','L','M'];
	for (i=0,str=str.split(''),len=str.length;i<len;i++) if ((x=rot.indexOf(str[i]))>-1) str[i]=tor[x];
	return str.join('');
}