sfHover = function() {
	var sfEls = document.getElementById("nav_main").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);


/***This one makes image captions from the alt tags***/

function addCaption( oImgElem, bUseCaptionMarker )
{
  // Insert Caption
  var oCaptionElem = document.createElement("div");
  oCaptionElem.className = "caption";

  var oCaptionTextElem = document.createElement("div");
  oCaptionTextElem.className = "caption-text";
  var oCaptionText = document.createTextNode( oImgElem.alt );
  oCaptionTextElem.appendChild(oCaptionText );
  oCaptionElem.appendChild(oCaptionTextElem);

  if(oImgElem.nextSibling) 
    oImgElem.parentNode.insertBefore(oCaptionElem,
      oImgElem.nextSibling);
  else
    oImgElem.parentNode.appendChild(oCaptionElem);

  with(oImgElem.style)
  {
    oCaptionElem.style.width = (oImgElem.width+borderLeft+
      borderRight+paddingLeft+paddingRight)+"px";
  }

  return true; 
}