gistfile1.js

function messageDecode(text) {
    var utftext = unescape(text);
    var string = "";
    var i = 0;
    var c = c1 = c2 = 0;
    
    while ( i < utftext.length ) {
	
	c = utftext.charCodeAt(i);
 
	if (c < 128) {
	    if(c == 43)
		string += " ";
	    else
		string += String.fromCharCode(c);
	    i++;
	}
	else if((c > 191) && (c < 224)) {
	    c2 = utftext.charCodeAt(i+1);
	    string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
	    i += 2;
	}
	else {
	    c2 = utftext.charCodeAt(i+1);
	    c3 = utftext.charCodeAt(i+2);
	    string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
	    i += 3;
	}
    }
    return string;
}