var uagent,uappVersion,uappName
uappName=navigator.appName
uappVersion=navigator.appVersion
uagent=navigator.userAgent

if ((uagent.substring(25,29) == "MSIE" && uagent.charAt(30) > 3) || (uappName == "Netscape" && uappVersion.substring(0,3) > 3))

{

img1off= new Image;
img1off.src="images/nav/nav_home.gif";
img2off= new Image;
img2off.src="images/nav/nav_aboutdelphi.gif";
img3off= new Image;
img3off.src="images/nav/nav_executiveprofiles.gif";
img4off= new Image;
img4off.src="images/nav/nav_contactus.gif";

img1on= new Image;
img1on.src="images/nav/nav_home2.gif";
img2on= new Image;
img2on.src="images/nav/nav_aboutdelphi2.gif";
img3on= new Image;
img3on.src="images/nav/nav_executiveprofiles2.gif";
img4on= new Image;
img4on.src="images/nav/nav_contactus2.gif";


}

function active(imgName){

if ((uagent.substring(25,29) == "MSIE" && uagent.charAt(30) > 3) || (uappName == "Netscape" && uappVersion.substring(0,3) > 3)){

document[imgName].src = eval(imgName + "on.src");

}
}

function inActive(imgName){

if ((uagent.substring(25,29) == "MSIE" && uagent.charAt(30) > 3) || (uappName == "Netscape" && uappVersion.substring(0,3) > 3)){

document[imgName].src = eval(imgName + "off.src");

}
}