function ShowHide(div,image)
{
   var thisLevel = document.getElementById(div);
   var thisImage = document.getElementById(image);
       if (thisLevel.style.display == "none")
		{                thisLevel.style.display = "block";
	                    thisImage.src = "./images/min.jpg";
		}        
		else
        {
		var thisLevel = document.getElementById(div);
		thisLevel.style.display = "none";
		thisImage.src = "./images/plus.jpg";        
		}
}