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var gf = new Object();
var pgf_base_url = "pgf"
gf.translate = function (input,from,to,cat,callback) {
var args = [];
args["input"] = input;
args["from"] = from;
args["to"] = to;
args["cat"] = cat;
gf.callFunction("translate", args, callback);
};
gf.complete = function (input,from,cat,callback) {
var args = [];
args["input"] = input;
args["from"] = from;
args["cat"] = cat;
gf.callFunction("complete", args, callback);
};
gf.grammar = function (callback) {
gf.callFunction("grammar", [], callback);
};
gf.callFunction = function (fun, args, callback) {
var query = "";
for (var i in args) {
query += (query == "") ? "?" : "&";
query += i + "=" + escape(args[i]);
}
gf.httpGetText(pgf_base_url + "/" + fun + query, function (output) { callback(gf.readJSON(output)); });
}
gf.httpGetText = function (url, callback) {
var XMLHttpRequestObject = false;
if (window.XMLHttpRequest) {
XMLHttpRequestObject = new XMLHttpRequest();
} else if (window.ActiveXObject) {
XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
}
if (XMLHttpRequestObject) {
XMLHttpRequestObject.open("GET", url);
XMLHttpRequestObject.onreadystatechange = function () {
if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {
callback(XMLHttpRequestObject.responseText);
delete XMLHttpRequestObject;
XMLHttpRequestObject = null;
}
}
XMLHttpRequestObject.send(null);
}
};
gf.readJSON = function (text) {
return eval("("+text+")");
};
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