// browser test:
agent = navigator.userAgent
browserVer = 2
if (agent.indexOf("a/3",6) == -1 && agent.indexOf("a/4",6) == -1) {browserVer = 2}
else {browserVer = 1}

//preload images
if (browserVer == 1) {

    leftoff = new Image();
	leftoff.src = "../imgs/nav_left_out.gif";
	lefton = new Image();
	lefton.src = "../imgs/nav_left_out2.gif";

}

function hilite(imgDocID,imgObjName){
	if (browserVer == 1) {
        document.images[imgDocID].src = eval(imgObjName + ".src")
	}	
}