function swap(targetId){
  
  if (document.getElementById)
        {
        target = document.getElementById(targetId);
        
            if (target.style.display == "none")
                {
                target.style.display = "";
                } 
            else 
                {
                target.style.display = "none";
                }
                
        }
}


function swapPhoto(photoSRC,theCaption,theMedium,theSize,thePrice) {

if (document.getElementById("caption")) {

	var theImage = document.getElementById("mainPhoto");
	var displayedCaption = document.getElementById("caption");
	var displayedMedium = document.getElementById("medium");
		var displayedSize = document.getElementById("size");
			var displayedPrice = document.getElementById("price");
	var imgFolder = "paintings_400/";
	displayedCaption.firstChild.nodeValue = theCaption;
	displayedMedium.firstChild.nodeValue = theMedium;
		displayedSize.firstChild.nodeValue = theSize;
			displayedPrice.firstChild.nodeValue = thePrice;
	theImage.setAttribute("src", imgFolder+photoSRC);

    }
  }