var ctr="pop1";
browver= parseInt(navigator.appVersion);
browtype = navigator.appName;
browsertype = "old";
var doc,styleobj,vis,top
if (browtype == "Netscape" && !(browver < 4)){
	browsertype = "ns"; 
	doc="document.layers."
	styleobj=""
	vis=".visibility"
}
if (browtype == "Microsoft Internet Explorer" && !(browver < 4)){
	browsertype = "ie";
	doc="document.all."
	styleobj=".style"
	vis=".visibility"
}
function show(a){
temp=a
eval(doc+ctr+styleobj+vis+"='hidden'")
eval(doc+temp+styleobj+vis+"='visible'")
ctr=temp
}
function hide(b){
temp=b
eval(doc+temp+styleobj+vis+"='hidden'")
}
function hideunlink(){
eval(doc+ctr+styleobj+vis+"='hidden'")
}