var alpha = new Array('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','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','9','_','-','@','.','?','&','=');

stringCheck = "";

for (i = 0; i < alpha.length; i++) {
	stringCheck += alpha[i];
}

function degrease(obfusc,shift) {

	var plainText = '';
	cipherText = obfusc;

	for (i = 0; i < cipherText.length; i++) {
		var currentText = stringCheck.indexOf(cipherText.charAt(i));

		if(currentText != -1) {

			if ((currentText - shift) >= 0) { 
				plainText += alpha[currentText - shift]; 
            } else { 
				plainText += alpha[(alpha.length + currentText)  - shift]; }
			}
		}
	parent.location = 'm'+'ai'+'l'+'t'+'o:'+plainText;
}