function getBrowserName() {
var aName  = navigator.appName.toUpperCase();
if (aName.indexOf("Safari") >= 0) return "Safari";
if (aName.indexOf("opera") >= 0) return "Opera";
if (aName.indexOf("NETSCAPE") >= 0)  return "Netscape";
if (aName.indexOf("MICROSOFT") >= 0) return "Explorer";
return "";
}

function linkMethod(openArea) {
browser = getBrowserName();
if  ( browser == "Explorer" ) {
videolink = "<a href=\"#\" name=\"boxtop\" onclick=\"AreaCange('"+openArea+"','Videos'); return false;\">&#12499;&#12487;&#12458;</a>|";
document.write( videolink );
} else {
videolink = "";
document.write( videolink );
}
}

function AreaCange(openArea,AreaName) {
document.getElementById( openArea + 'Area' ).style.display = 'none';
document.getElementById( AreaName + 'Area' ).style.display = 'block';
}