var isNav;
var isIE;
var coll = "";
var styleObj = "";
var timeoutId=null;
position_top = 0;

var bName = navigator.appName;
var bPlat = navigator.userAgent;
var bVer = parseInt(navigator.appVersion)
var browser = ""
var platform = ""

	if (bName == "Netscape" && bVer > 3)
		{ browser = "NS";
		  coll = "holder.document.";
	} else if (bName == "Microsoft Internet Explorer" && bVer > 3)
		{ browser = "IE";
		  coll = "all.";
		  styleObj = ".style";
	} else 
		{ browser = bName;
	}

	if ((navigator.appVersion.indexOf("Mac") != -1))
		{ platform = "mac";
	} else
		{ platform = "pc";
	}