function  showImage(){
    document.getElementById("imgPlace").src=aUrl + aImage[aImage.Index][0];
	document.getElementById("caption").innerHTML = aImage[aImage.Index][1];
	document.getElementById("medium").innerHTML = aImage[aImage.Index][2];
	document.getElementById("dimensions").innerHTML = aImage[aImage.Index][3];
	document.getElementById("counter").innerHTML = (aImage.Index+1) + " of " + aImage.length;
	if (aImage.Index==aImage.length-1) 
	{
		document.getElementById("forth").style.opacity = '0.5';
	} 
	if (aImage.Index==0)
	{
		document.getElementById("back").style.opacity = '0.5';
	}
	toggleDiv('images', 'workstate', 1);
}

function forth_onclick() {
	if (aImage.Index+1==aImage.length) return;	
	document.getElementById("back").style.opacity = '1';
	document.getElementById("imgPlace").src="images/loading.gif";
	aImage.Index++;
	showImage();
}

function back_onclick() {
	if (aImage.Index==0) return;
	document.getElementById("forth").style.opacity = '1';
	document.getElementById("imgPlace").src="images/loading.gif";
	aImage.Index--;
	showImage();
}

function toggleDiv(dividVis,dividNoVis, callFrom){
	if(callFrom == 1)
	{
		currImg = document.getElementById("imgPlace").src;
	}
	document.getElementById(dividNoVis).style.display = 'none';
	document.getElementById(dividVis).style.display = 'block';
if (dividVis == 'workstate') {
	document.getElementById("imgPlace").src = "images/loading.gif";
	document.getElementById("info").style.display = 'none';
	document.getElementById("backinfo").style.display = 'inline';
	}
else
{
	//alert("back="+ document.getElementById("imgPlace").src);
	document.getElementById("imgPlace").src = currImg;
	document.getElementById("info").style.display = 'inline';
	document.getElementById("backinfo").style.display = 'none';
}

}