bName = navigator.appName;
bVer = parseInt(navigator.appVersion);
if((bName == "Microsoft Internet Explorer" && bVer >=4) || (bName == "Netscape" && bVer >=3))
        ver="n3";
else
        ver="dd";
if(ver == "n3") {
        centre_up = new Image(197,91);
        centre_up.src = "images/map/centre.gif";

        creek_ov = new Image(197,91);
        creek_ov.src = "images/map/creek_map.jpg";
        ctalk_ov = new Image(197,91);
        ctalk_ov.src = "images/map/chord_map.jpg";
        alchem_ov = new Image(197,91);
        alchem_ov.src = "images/map/nexus_map.jpg";
        dream_ov = new Image(197,91);
        dream_ov.src = "images/map/dream_map.jpg";
        epos_ov = new Image(197,91);
        epos_ov.src = "images/map/epos_map.jpg";
        rega_ov = new Image(197,91);
        rega_ov.src = "images/map/rega_map.jpg";
		primare_ov = new Image(197,91);
		primare_ov.src="images/map/primare_map.jpg";
		cambridge_ov = new Image(197,91);
		cambridge_ov.src = "images/map/cambridge_map.jpg";
		elac_ov = new Image(197,91);
		elac_ov.src = "images/map/elac_map.jpg";
		dvdo_ov = new Image(197,91);
		dvdo_ov.src = "images/map/dvdo_map.jpg";
		quadraspire_ov = new Image(197,91);
		quadraspire_ov.src = "images/map/quadraspire_map.jpg";
		plinius_ov = new Image(197,91);
		plinius_ov.src = "images/map/plinius_map.jpg";
		rega2_ov = new Image(197,91);
        rega2_ov.src = "images/map/rega2_map.jpg";
		rel_ov = new Image(197,91);
        rel_ov.src = "images/map/rel_map.jpg";
		mission_ov = new Image(197,91);
        mission_ov.src = "images/map/mission_map.jpg";
		

}

function alive(imgName) {
        if(ver == "n3")
                document.images[6].src = eval(imgName + "ov.src");
}

function dead(imgName) {
        if(ver == "n3")
                document.images[6].src = eval(imgName + "up.src");
}