// switches images on the product page
// thanks to alistapart
function switchImg (whichpic) {
	if( document.getElementById ) {
		document.getElementById('product-image').src = whichpic.href;
		return false;
	} else {
		return true;
	}
}


// swaps layers for the map address
var cur_lyr;	// holds id of currently visible layer

function swapLayers(id) {
  if (cur_lyr) hideLayer(cur_lyr);
  showLayer(id);
  cur_lyr = id;
}

function showLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.display = "block";
}

function hideLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.display = "none";
}

function getElemRefs(id) {
	var el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? document.layers[id]: null;
	if (el) el.css = (el.style)? el.style: el;
	return el;
}