// image swapping

if (document.images) {
	research = new Image();
	researchOn = new Image();
	research.src = "images/linkResearch-off.gif";
	researchOn.src = "images/linkResearch-on.gif";

      resArts = new Image();
      resArtsOn = new Image();
      resArts.src = "images/linkResArts-off.gif";
      resArtsOn.src = "images/linkResArts-on.gif";

	resIndustr = new Image();
	resIndustrOn = new Image();
	resIndustr.src = "images/linkResIndustr-off.gif";
	resIndustrOn.src = "images/linkResIndustr-on.gif";

	resProto = new Image();
	resProtoOn = new Image();
	resProto.src = "images/linkResProto-off.gif";
	resProtoOn.src = "images/linkResProto-on.gif";	

	resSocial = new Image();
	resSocialOn = new Image();
	resSocial.src = "images/linkResSocial-off.gif";
	resSocialOn.src = "images/linkResSocial-on.gif";

	pub = new Image();
	pubOn = new Image();
	pub.src = "images/linkPub-off.gif";
      pubOn.src = "images/linkPub-on.gif";

      cv = new Image();
      cvOn = new Image();
      cv.src = "images/linkCV-off.gif";
      cvOn.src = "images/linkCV-on.gif";

	banner_cv = new Image();
	banner_cv.src = "images/bannerCV.gif";

	banner_pub = new Image();
	banner_pub.src = "images/bannerPub.gif";

	banner_research = new Image();
	banner_research.src = "images/bannerResearch.gif";

	banner_resArts = new Image();
	banner_resArts.src = "images/bannerResArts.gif";

	banner_resIndustr = new Image();
	banner_resIndustr.src = "images/bannerResIndustr.gif";

	banner_resProto = new Image();
	banner_resProto.src = "images/bannerResProto.gif";

	banner_resSocial = new Image();
	banner_resSocial.src = "images/bannerResSocial.gif";
}

function imgOn(imgName,frameName) {
        if (document.images) {
            parent.frames[frameName].document[imgName].src = eval(imgName + "On.src");
        }
}


function imgOff(imgName,frameName) {
        if (document.images) {
            parent.frames[frameName].document[imgName].src = eval(imgName + ".src");
        }
}

function swapImg(changeTo,imgName,frameName) {
        if (document.images) {
            parent.frames[frameName].document[imgName].src = eval("banner_" + changeTo + ".src");
        }
	return false;
}


// for html files in subdirectory (file paths are relative to html docs not js file
function swapImgSub(changeTo,imgName,frameName) {

	bannerSub_cv = new Image();
	bannerSub_cv.src = "../images/bannerCV.gif";

	bannerSub_pub = new Image();
	bannerSub_pub.src = "../images/bannerPub.gif";

	bannerSub_research = new Image();
	bannerSub_research.src = "../images/bannerResearch.gif";

	bannerSub_resArts = new Image();
	bannerSub_resArts.src = "../images/bannerResArts.gif";

	bannerSub_resIndustr = new Image();
	bannerSub_resIndustr.src = "../images/bannerResIndustr.gif";

	bannerSub_resProto = new Image();
	bannerSub_resProto.src = "../images/bannerResProto.gif";

	bannerSub_resSocial = new Image();
	bannerSub_resSocial.src = "../images/bannerResSocial.gif";

	if (document.images) {
            parent.frames[frameName].document[imgName].src = eval("bannerSub_" + changeTo + ".src");
      }
	return false;
}



// keep track of what title banner should appear and maintain when page reloads
// 
function reloaded() {
	var lastClicked;
	swapImg(lastClicked,'banner','title');
}