browserName=navigator.appName; browserVer=parseInt(navigator.appVersion);

if ((browserName=="Netscape" && browserVer>=3) || (browserName=="Microsoft Internet Explorer" && browserVer>=4)) version="n3"; else version="n2";

if (version=="n3") {

submissionon = new Image(); 
submissionon.src = "img/archivesubmissions_hover.gif"; 
submissionoff = new Image(); 
submissionoff.src = "img/archivesubmissions.gif"; 
loginon = new Image(); 
loginon.src = "img/login_hover.gif"; 
loginoff = new Image(); 
loginoff.src = "img/login.gif";
signupon = new Image(); 
signupon.src = "img/signup_hover.gif"; 
signupoff = new Image(); 
signupoff.src = "img/signup.gif";


}

function img_act(imgName)  { if (version == "n3")   { imgOn = eval(imgName + "on.src"); document [imgName].src = imgOn; } }

function img_inact(imgName)   { if (version == "n3") { imgOff = eval(imgName + "off.src"); document [imgName].src = imgOff; } }