var actImg = 0;

function switchImageGallery(imgSmallid,imgBigid)
{
	
	//var asgDiv = document.getElementById('asg');
	//alert(id + ' - ' +big_id);
	if(actImg == 0)
	{
	
		actImg = imgBigid;
	}

	var imgShow = document.getElementById('img_' + imgSmallid);
	var imgHidden = document.getElementById('img_' + actImg);

	if(imgShow != null && imgHidden != null)
	{
		imgHidden.style.display = 'none';
		imgShow.style.display = 'block';
		
	}
	actImg = imgSmallid;
}