browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion);
 
if (browser_name == "Netscape" && browser_version < 2.0)
        {
        roll = "false";
        }
else if (browser_name == "Netscape" && browser_version == 2.0)
        {
        roll = "false";
        }
else if (browser_name == "Netscape" && browser_version >= 3.0)
        {
        roll = "true";

        }

else if (browser_name == "Microsoft Internet Explorer" && browser_version <= 2.0)

        {

        roll = "false";

        }

else if (browser_name == "Microsoft Internet Explorer" && browser_version > 3.02)

        {

        roll = "true";

        }

else

        {

        roll = "false";

        }

 

function msover(img1,ref1)

        {

                if (roll == "true")

                        {

                        document.images[img1].src = ref1;

                                        }

        }

        

function msout(img1,ref1)

        {

                if (roll == "true")

                        {

                        document.images[img1].src = ref1;

                

                        }

        }

 

//preload

 

if (roll == "true")

        {

 

//buttonson

but21on = new Image(440,43);

  but21on.src = "whoweare_link.png";

but22on = new Image(440,43);

  but22on.src = "microfilm_link.png";

but23on = new Image(440,43);

  but23on.src = "history_link.png";

but24on = new Image(440,49);

  but24on.src = "ukpdp_link.png";

but25on = new Image(440,20);

  but25on.src = "kdl_link.png";

but26on = new Image(440,20);

  but26on.src = "intro_link.png";

but27on = new Image(440,20);

  but27on.src = "ca_link.png";

but28on = new Image(440,38);

  but28on.src = "techtalk_link.png";

 

//buttonoff

 

but21off = new Image(440,43);

  but21off.src = "whoweare.png";

but22off = new Image(440,43);

  but22off.src = "microfilm.png";

but23off = new Image(440,52);

  but23off.src = "history.png";

but24off = new Image(440,49);

  but24off.src = "ukpdp.png";

but25off = new Image(440,20);

  but25off.src = "kdl.png";

but26off = new Image(440,20);

  but26off.src = "intro.png";

but27off = new Image(440,20);

  but27off.src = "ca.png";

but28off = new Image(440,20);

  but28off.src = "techtalk.png";


 

        }