var curSelIndex = 0;

var totalWords = 0;

var tid = null;
var p_key = "";
var p_s = "";


// Copyright by Dictworld.com Email: wjyong@sh163.net

// Initialize

function Initialize(s)

{

	try

	{

		req = new ActiveXObject("Msxml2.XMLHTTP");

	}

	catch(e)

	{

		try

		{

			req = new ActiveXObject("Microsoft.XMLHTTP");

		}

		catch(oc)

		{

			req = null;

		}

	}



	if(!req && typeof XMLHttpRequest!="undefined")

	{

        try

        {

            req=new XMLHttpRequest();

        }

        catch (e)

        {

            req = null;

        }

	}

	var xy = GetTextPosition(document.getElementById("q"));

	document.getElementById("autocomplete").style.left = xy[0] + "px";

	document.getElementById("autocomplete").style.top = xy[1] + document.getElementById("q").offsetHeight + "px";

	document.getElementById("autocomplete").style.width = document.getElementById("q").offsetWidth + "px";

}


function OnSearch()
{
    window.clearTimeout(tid);
    return true;
}

// Send query
function SendQuery(evt, key, s)
{
    try
    {
        p_key = key;
        p_s = s;
        var k = evt.keyCode;
		if (document.getElementById("autocomplete").style.visibility=="visible")
		{
			switch(k)
			{
				case 38: ArrowUp(); return;
				case 40: ArrowDown(); return;
				case 32:
					if (curSelIndex>0)
					{
						ShowSelectedWord();
						return;
					}
					break;
				default:
					break;
			}
		} else {
			switch(k)
			{
				case 37:
				case 38:
				case 39:
				case 40:
					return;
				default:
					break;
			}
		}
        if (tid!=null)
        {
            window.clearTimeout(tid);
        }
        tid = window.setTimeout("GetSimilarWords()", 500);
    }
    catch (e)
    {
        alert(e);
    }
}

// Send query

function GetSimilarWords()

{

	try

	{
        key = p_key;
        s = p_s;
        window.clearTimeout(tid);
		if(key == "") {HideDiv("autocomplete");return;}

		Initialize(s);



		if(req != null)

		{

			req.onreadystatechange = Process;

			req.open("GET", "dict.php?s=" + s + "&k="+ encodeURI(key), true);

			req.send(null);

		}

	}

	catch(e)

	{

		//Exception, then skill
	}

}



// process the HTTP response

function Process()

{

	if (req.readyState == 4)

	{

		// only if "OK"

		if (req.status == 200)

		{

			if(req.responseText=="")

			{

				document.getElementById("autocomplete").innerHTML ="";

				HideDiv("autocomplete");

			} else			{

				ShowDiv("autocomplete");

				document.getElementById("autocomplete").innerHTML = req.responseText;

			}

			var AutoCompleteTable = document.getElementById("autocomplete").childNodes[0];

			if (AutoCompleteTable)

			{

				curSelIndex = 0;

				totalWords = document.getElementById("autocomplete").childNodes[0].childNodes[0].childNodes.length;

			}

		}

		else

		{

			// another status

			HideDiv("autocomplete");

		}

	}

}



// Show layer

function ShowDiv(divid)

{

   if (document.layers) document.layers[divid].visibility="show";

   else document.getElementById(divid).style.visibility="visible";

}



// Hide layer

function HideDiv(divid)

{

   if (document.layers) document.layers[divid].visibility="hide";

   else document.getElementById(divid).style.visibility="hidden";

}



function GetTextPosition(obj)

{

    var objLeft = obj.offsetLeft;

    var objTop = obj.offsetTop;

    var objParent = obj.offsetParent;

    while (objParent.tagName != "BODY")

	{

        objLeft += objParent.offsetLeft;

        objTop += objParent.offsetTop;

        objParent = objParent.offsetParent;

    }

    return([objLeft,objTop]);

}



// Check whether the word is right or not

function CheckWord(word, answer)

{

	if (word.length == answer.length)

	{

		if (word == answer)

		{

			document.f.q.disabled = true;

			NextGuess();

		}

	}

}



// Initialize

function InitGuess()

{

	try

	{

		req = new ActiveXObject("Msxml2.XMLHTTP");

	}

	catch(e)

	{

		try

		{

			req = new ActiveXObject("Microsoft.XMLHTTP");

		}

		catch(oc)

		{

			req = null;

		}

	}



	if(!req && typeof XMLHttpRequest!="undefined")

	{

		try

        {

            req=new XMLHttpRequest();

        }

        catch (e)

        {

            req = null;

        }

	}

}

// Send query

function NextGuess()

{

	InitGuess();

	if(req != null)

	{

		req.onreadystatechange = ProcessGuess;

		req.open("GET", "dict.php?s=5", true);

        req.send(null);

	}

	return false;

}



// process the HTTP response

function ProcessGuess()

{

	if (req.readyState == 4)

	{

		// only if "OK"

		if (req.status == 200)

		{

			if(req.responseText=="")

			{

				document.getElementById("autocomplete").innerHTML ="";

				HideDiv("autocomplete");

			} else {

				ShowDiv("autocomplete");

				document.getElementById("autocomplete").innerHTML = req.responseText;

				document.f.q.value = '';

				document.f.q.disabled = false;

				document.f.q.focus();

			}

		}

		else

		{

			// another status

			HideDiv("autocomplete");

		}

	}

}



function GetAnswer()

{

	document.getElementById("TJWordSpell").innerHTML = document.ff.answer.value;

}



function ArrowUp()

{

	if (curSelIndex<=1)

	{

		return;

	}

	var AutoCompleteTable = document.getElementById("autocomplete").childNodes[0];

	if (AutoCompleteTable)

	{

		var WordDiv = AutoCompleteTable.childNodes[0].childNodes[curSelIndex-1];

		if (WordDiv) WordDiv.style.background = "#FFFFFF";

		curSelIndex --;

		WordDiv = AutoCompleteTable.childNodes[0].childNodes[curSelIndex-1];

		if (WordDiv) WordDiv.style.background = "#EEFFEE";

	}

}



function ArrowDown()

{

	if (curSelIndex>=totalWords)

	{

		return;

	}

	var AutoCompleteTable = document.getElementById("autocomplete").childNodes[0];

	if (AutoCompleteTable)

	{

		var WordDiv = AutoCompleteTable.childNodes[0].childNodes[curSelIndex-1];

		if (WordDiv) WordDiv.style.background = "#FFFFFF";

		curSelIndex ++;

		WordDiv = AutoCompleteTable.childNodes[0].childNodes[curSelIndex-1];

		if (WordDiv) WordDiv.style.background = "#EEFFEE";

	}

}



function ShowSelectedWord()

{

	if (curSelIndex<=0||curSelIndex>totalWords)

	{

		return;

	}

	var AutoCompleteTable = document.getElementById("autocomplete").childNodes[0];

	if (AutoCompleteTable)

	{

		var WordDiv = AutoCompleteTable.childNodes[0].childNodes[curSelIndex-1];

		if (WordDiv)

		{

			for(var i=0; i < WordDiv.childNodes[0].childNodes.length; i++)

			{

				if(WordDiv.childNodes[0].childNodes[i].tagName == "A")

				{

					document.f.q.value = WordDiv.childNodes[0].childNodes[i].innerText;

					document.f.q.focus();

					curSelIndex = 0;

					HideDiv("autocomplete");

				}

			}

		}

	}

}