//global variables
var stop_flag=0;
var speed = 10; //move speed 10 millionseconds
var space = 10; //move width (px) each time
var pagewidth = 314; //page width = image width
var fill = 0; // whole move
var movelock = false;
var MoveObjTimerID;
var direction="right";
var Comp_1 = 0;
var AutoplayObjTimerID=null;

//find document element object by id
function GetObj(objName)
{
	if(document.getElementById)
	  	return eval('document.getElementById("'+objName+'")');
	else
		return eval('document.all.'+objName);
}
/*
************************************
*automatic scroll - default to left
************************************
*/

function AutoPlay()
{
	clearInterval(AutoplayObjTimerID);
	AutoplayObjTimerID=setInterval('Scroll_RightGo();Scroll_RightStop();',5000)
}

/*
************************************
*manually scroll to left
************************************
*/
function Scroll_LeftGo()
{
	if(movelock)
		return;
	clearInterval(AutoplayObjTimerID);
	movelock=true;
	direction="left";
	MoveObjTimerID=setInterval('scrollLeft();',speed);
}

/*
***********************************
*stop manually scroll to left
***********************************
*/
function Scroll_LeftStop()
{
	if(direction == "right")
		return

	clearInterval(MoveObjTimerID);
	if((GetObj('AdContent_ID').scrollLeft-fill)%pagewidth!=0)
	{
		Comp_1=fill-(GetObj('AdContent_ID').scrollLeft%pagewidth);
		CompScr_1();
	}else{
		movelock=false;
	}
	//AutoPlay()
 }

/*
**************************************
*manually scroll left - image move
**************************************
*/
function scrollLeft()
{
	if(GetObj('AdContent_ID').scrollLeft<=0)	
		GetObj('AdContent_ID').scrollLeft=GetObj('AdContent_ID').scrollLeft+GetObj('List1_1').offsetWidth
	
	GetObj('AdContent_ID').scrollLeft-=space
}

/*
*************************************
*manually scroll right
*************************************
*/
function Scroll_RightGo()
{
	clearInterval(MoveObjTimerID);
	if(movelock)
		return;
	clearInterval(AutoplayObjTimerID);
	movelock=true;
	direction="right";
	scrollRight();MoveObjTimerID=setInterval('scrollRight()',speed)
}

/*
***********************************
*stop manually scroll right
***********************************
*/
function Scroll_RightStop(stop)
{
	if(direction == "left")
	   return;
	clearInterval(MoveObjTimerID);
	if(GetObj('AdContent_ID').scrollLeft%pagewidth-(fill>=0?fill:fill+1)!=0){
		Comp_1=pagewidth-GetObj('AdContent_ID').scrollLeft%pagewidth+fill;
		CompScr_1();
	}else{
		movelock=false;
	}

	if(stop>0)
	   stop_flag=stop;

	if(stop_flag == 0)
		AutoPlay();
}

/*
************************************
*manually scroll right-image move
********************************8***
*/

function scrollRight()
{
	if(GetObj('AdContent_ID').scrollLeft>=GetObj('List1_1').scrollWidth)	
		GetObj('AdContent_ID').scrollLeft=GetObj('AdContent_ID').scrollLeft-GetObj('List1_1').scrollWidth
	
	GetObj('AdContent_ID').scrollLeft+=space
}

/*
************************************
*compare scroll
************************************
*/
function CompScr_1()
{
	if(Comp_1==0)
	{
		movelock=false; return
	}
	var num,TempSpeed=speed,TempSpace=space;
	if(Math.abs(Comp_1)<pagewidth/2)
	{
		TempSpace=Math.round(Math.abs(Comp_1/space));
		if(TempSpace<1){TempSpace=1}
	}
	if(Comp_1<0){
		if(Comp_1<-TempSpace)
		{
			Comp_1+=TempSpace;num=TempSpace
		}else{
			num=-Comp_1;Comp_1=0
		}

		GetObj('AdContent_ID').scrollLeft-=num;
		setTimeout('CompScr_1()',TempSpeed)
	}else
	{
		if(Comp_1>TempSpace)
		{
			Comp_1-=TempSpace;num=TempSpace}else{num=Comp_1;Comp_1=0
		}
		GetObj('AdContent_ID').scrollLeft+=num;
		setTimeout('CompScr_1()',TempSpeed)
	}
}

/*
********************************
* display Ad content
********************************
*/
function showAd(index){
    if(stop_flag==0){    	
    	clearInterval(AutoplayObjTimerID);
    	stop_flag=1;
    }
    document.location=AdImgAry[--index].url;
}