/*
 * Name:
 *	secretword.js
 *
 * Description:
 *	Defines functions for making AJAX queries via the HTTP protocol's GET method.
 *
 * Pre-conditions:
 *	'q'			   : secret word entered by the user
 *	'secretWordId' : from secret_word.lib
 *
 * Post-conditions:
 * - response from the server for the GET request
 *
 * Log:
 *	Kripa Shenai		08/15/2006
 *	- Creation
 * 	Kripa Shenai  		03/14/2007
 *	- Added handleKeystroke
 */



var xmlHttp

function showLink(str1,str2,str3,str4)
{
	if (str1.length==0)
	{
		document.getElementById("txtLink").innerHTML="";
		return;
	}

	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request");
		return;
	}

var url="/get_secret_word.php";
url=url+"?q="+str1;
url=url+"&secretWordId="+str2;
url=url+"&liteGraphicId="+str3;
url=url+"&stylePrefix="+str4;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);

}

function stateChanged()
{
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{
		document.getElementById("txtLink").innerHTML=xmlHttp.responseText
	}
}

function GetXmlHttpObject()
{
var objXMLHttp=null

	if (window.XMLHttpRequest)
	{
		objXMLHttp=new XMLHttpRequest()
	}
	else if (window.ActiveXObject)
	{
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
return objXMLHttp
}

function handleKeystroke(e)
{
    var keyPressed;

    //Browser compatibility check
    if (document.all)
    {
        //Browser used: Internet Explorer 6
        keyPressed = e.keyCode;
    }
    else
    {
        //Browser used: Firefox
        keyPressed = e.which;
    }

    //13 = ASCII code for Enter key
    if (keyPressed == 13)
    {
    	window.location.href = document.getElementById("gotoLink").value;
    }

}