browser=navigator.appName;
browserNum=parseInt(navigator.appVersion);

if ((browser=="Netscape") && (browserNum<5))
{layerRef="document.layers['";
endLayerRef="']";
styleRef="";}

else if ((browser=="Netscape") && (browserNum>=5))
{layerRef="document.getElementById('";
endLayerRef="')";
styleRef=".style";}

else
{layerRef="document.all['";
endLayerRef="']";
styleRef=".style";}

oldLayer="none";

function showZodiac(layerName)
{eval(layerRef+layerName+endLayerRef+styleRef+".visibility='visible'");
if (oldLayer!="none")
{eval(layerRef+oldLayer+endLayerRef+styleRef+".visibility='hidden'");}
if (oldLayer==layerName)
{oldLayer="none";}
else {oldLayer=layerName;}}