var videoCnt=0, videoIteration=0, videoStop, imgCnt=0;

$(function (){
	imgCnt = $(".thumb").length;
	$("a.backVideo").css({cursor:"pointer",visibility:"hidden"});
	img_status(videoIteration+1,imgCnt);
})

function initVideoCnt(cnt)
{
		videoCnt = cnt ;
		videoIteration=1;
		videoStop = cnt;
		$("a.frontVideo").css({cursor:"pointer"});
		$("div.moveGallery").css({left: '0px'});
}


function galleryFront()
{

	if(videoCnt==0)
	{
		initVideoCnt(imgCnt);
	}
	var divLeft = parseInt($("div.moveGallery").css('left'));
	var divBoundry = parseInt($("div.image_collection").css('width'))-80;

	if(videoIteration < videoStop)
	{
		$("div.moveGallery").animate({left: '-=600px'}, 500);
		$("a.backVideo").css({cursor:"pointer",visibility:"visible"});
		var objImage= document.getElementById('prevbtn');
		objImage.src = 'images/prev.gif';
		img_status(videoIteration+1,imgCnt);
	}
	else
	{
		videoIteration = videoStop-1;
		$("#nextbtn").attr("src","images/next.gif");
		$("#prevbtn").attr("src","images/last.gif");
		videoIteration=0;
		$("div.moveGallery").animate({left: '0px'}, 500);
		img_status(videoIteration+1,imgCnt);
	}
	videoIteration++;
	if (videoIteration == imgCnt)
	{
		var objImage= document.getElementById('nextbtn');
		objImage.src = 'images/first.gif';
	}
}

function galleryBack()
{
	if(videoCnt==0)
	{
		initVideoCnt(imgCnt);
	}

	var divLeft = parseInt($("div.moveGallery").css('left'));
	var divBoundry = parseInt($("div.image_collection").css('width'))+80;

	if(videoIteration > 1)
	{
		$("div.moveGallery").animate({left: '+=600px'}, 500);
		$("a.frontVideo").css({cursor:"pointer",visibility:"visible"});
		var objImage= document.getElementById('nextbtn');
		objImage.src = 'images/next.gif';
		img_status(videoIteration-1,imgCnt);
	}
	else
	{
		$("#prevbtn").attr("src","images/prev.gif");
		$("#nextbtn").attr("src","images/first.gif");
		var to_move = '-'+((imgCnt-1) * 600) +'px';
		$("div.moveGallery").animate({left: to_move}, 500);
		videoIteration = imgCnt+1;
		img_status(videoIteration-1,imgCnt);
	}
	videoIteration--;
	if (videoIteration == 1)
	{
		$("#prevbtn").attr("src","images/last.gif");
	}
}
function img_status(s,e)
{
	$("#c_img").text(s);
	$("#t_img").text(e);
	$("#img_desc").text($(".thumb").eq(s-1).attr("alt"));
}