var isNav, isIE
var coll = ""
var styleObj = ""
if (parseInt(navigator.appVersion) >= 4){
   if (navigator.appName == "Netscape"){
    isNav = true
   }else {
    isIE = true
   }
  } 
function imagechange(imagename , imagenum)
{
var cond = "0"
var path = ""

if (isNav)
 { path = eval ("document." + imagename) }
else
 { path = eval ("document.all." + imagename)}
 
path.src = eval("img" + imagename +"[" + imagenum + "].src")
}