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 >= 3.0)
 {roll = 'true';}
else if (browser_version >= 4.0) 
 {roll = 'true';}
else
 {roll = 'false';}
function msover(img,ref)
 {if (roll == 'true')
 {document.images[img].src = ref;}
 }
function msout(img,ref)
 {if (roll == 'true')
 {document.images[img].src = ref;}
 }


//end