function lib_bwcheck(){
	this.ver=navigator.appVersion
	this.agent=navigator.userAgent
	this.dom=document.getElementById?1:0
	this.opera5=(navigator.userAgent.indexOf("Opera")>-1 && document.getElementById)?1:0
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
	this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6
	this.mac=this.agent.indexOf("Mac")>-1
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
	return this
}
var bw=lib_bwcheck()

function toggleOverMenu(id){
	toggleOutMenu();
	toggleLayer(menus[id],1);
	toggleLayer(menus[id]+'spacer',1);
	toggleLayer('divtopmenuout',1);
}

function toggleOutMenu(){
	for(i=0;i<menus.length;i++){
		toggleLayer(menus[i],0);
		toggleLayer(menus[i]+'spacer',0);
	}
	toggleLayer('divtopmenuout',0);
}

function toggleLayer(name,state){
	objStyle=bw.dom?document.getElementById(name).style:bw.ie4?document.all[name].style:bw.ns4?eval('document.'+name):0;
	state==0?bw.ns4?objStyle.visibility='hide':objStyle.visibility='hidden':bw.ns4?objStyle.visibility='show':objStyle.visibility='visible';
}

menus=new Array();
menus[0]='divmenupos';
menus[1]='divmenuemp';
menus[2]='divmenuapp';
menus[3]='divmenusrv';