var maxNum;
var currentIndex = 0;
var galleryImgArray = new Array();
var slideshow_galleryContainer;
var running = true;

function initImageGallery(divId){	
	slideshow_galleryContainer = document.getElementById(divId);	
		
	galleryImgArray = slideshow_galleryContainer.getElementsByTagName('IMG');	
	maxNum = galleryImgArray.length - 1;
	
	for(var i=0;i<galleryImgArray.length;i++){		
		galleryImgArray[i].style.display='none';
	}	
	galleryImgArray[0].style.display='block';
	document.getElementById('counter').innerHTML=(currentIndex+1)+" / "+(maxNum+1);	
		
	if(maxNum == 0){			
		document.getElementById("slideBtns").style.display='none';
	}else{
		timer = setInterval('changePic("++")',10000);		
	}
}

function changePic(opr){
	clearInterval(timer);	
	document.getElementById("pauseBtn").src="images/slideshow/pauseNorm.gif";	
	running = true;	
	galleryImgArray[currentIndex].style.display='none';	
	
	currentIndex = (opr == "++") ? ((currentIndex++) == maxNum) ? 0 : currentIndex++ : ((currentIndex--) == 0) ? maxNum : currentIndex--;	//lol
	document.getElementById('counter').innerHTML=(currentIndex+1)+" / "+(maxNum+1);	
	
	galleryImgArray[currentIndex].style.display='block';
	timer = setInterval('changePic("++")',10000);	
}

function pauseShow(){	
	if(running){
		running = false;
		clearInterval(timer);		
	}else{
		running = true;
		timer = setInterval('changePic("++")',1000);	
	}
}