/*
* Name:
*	vote_image.js
*
* Description:
*	Defines functions for making AJAX call via the HTTP protocol's GET method.
*
* Pre-conditions:
*
*	imageGalleryId : REQUIRED	id of the gallery
*	liteGraphicId :  REQURIED	id of the graphic	
*
* Post-conditions:
*
*  Log:
*	Anumula 	03/01/2007
*		creation
*
*	Ashok Vaishnav	04/25/2008
*		- Added validation for liteGraphicId for issue vx-1633.
*	Phuc Thieu	06/10/2008
*		- VX-1799 prevent users from cheating the vote system through js
*/

var xmlHttp

function funcVote(imageGalleryId, event)
{

//if the event was not a left mouse click, do not count vote and return false.
// event.button = 0 (left mouse click)
if(event.button !=0 || event.button=="undefined"){
  alert("Sorry, your vote did not count.  Please click on the Vote button to vote.");
  return false;
}
	xmlHttp=GetXmlHttpObject()
	var imageCount;
	var liteGraphicId = false; // liteGraphicId is declared

	if (xmlHttp==null){
		alert ("Browser does not support HTTP Request")
		return
	}
	
	
	//alert(document.gallery_thumb.radioname.length);
	//
	//for loop to get the checked radio button
	//
	for(imageCount=0;imageCount<document.gallery_thumb.radioname.length;imageCount++)
	{
		if(document.gallery_thumb.radioname[imageCount].checked)
		{
			liteGraphicId = '' + document.gallery_thumb.radioname[imageCount].value; 
			break;
		}
	}
	
	// check if liteGraphicId is false or not.
	if(!liteGraphicId){
		alert("Please select image to vote! ");
		if(document.getElementById('vote') && document.getElementById('vote')!='undefined'){
			document.getElementById('vote').disabled = false;
			return false;
		}
	} // End if liteGraphicId is false or not.
	
	imageGalleryId = '' + imageGalleryId;
	
	var url = "/vote_image.php";
	url += "?imageGalleryId=" + imageGalleryId;
	url += "&liteGraphicId=" + liteGraphicId;
	//Add serial number in url.
	url += "&sid="+Math.random();
	//url += "&stnBoxId=" + stnBoxId;
	
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function stateChanged()
{
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{
		response = xmlHttp.responseText;

		alert(response);
		//obj=document.getElementById("display");
		//obj.innerHTML="Progress....";
		//obj.innerHTML=response;
	}else{ // set response with xmlhttp object responsetext
		//alert(response);
	}
}

function GetXmlHttpObject(){

	var objXMLHttp=null

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