<!--


bName = navigator.appName;

bVer = parseInt(navigator.appVersion);

if ((bName == "Netscape" && bVer>=3) ||

        (bName == "Microsoft Internet Explorer" && bVer>=4)) browser= "n3";

else browser="n2";

// Create image objects, preload all active and inactive images.

if (browser=="n3") {

                        homeon = new Image();
                        homeon.src = "images/nav_home_on.gif";
                        physon = new Image();
                        physon.src = "images/nav_phys_info_on.gif";
						paton = new Image();
        				paton.src = "images/nav_pat_info_on.gif";
                        newson = new Image();
                        newson.src = "images/nav_news_on.gif";
                        contacton = new Image();
                        contacton.src = "images/nav_contact_on.gif";
						reqon = new Image();
                        reqon.src = "images/nav_req_gray.gif";
                        
						
       					
                        homeoff = new Image();
                        homeoff.src = "images/nav_home_off.gif";
                        physoff = new Image();
                        physoff.src = "images/nav_phys_info_off.gif";
						patoff = new Image();
        				patoff.src = "images/nav_pat_info_off.gif";
                        newsoff = new Image();
                        newsoff.src = "images/nav_news_off.gif";
                        contactoff = new Image();
                        contactoff.src = "images/nav_contact_off.gif";
                        reqoff = new Image();
                        reqoff.src = "images/nav_req_off.gif";
						
       					
}

 

function swapOn(imgName){

        if(browser=="n3"){
			
		
        document[imgName].src = eval(imgName + "on.src");

        }

}

 

function swapOff(imgName){

        if(browser=="n3"){

        document[imgName].src = eval(imgName + "off.src");

        }

}