function lib_bwcheck(){
				this.ver=navigator.appVersion
				this.agent=navigator.userAgent
				this.dom=document.getElementById?1:0
				this.opera5=this.agent.indexOf("Opera 5")>-1
				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=new lib_bwcheck()

			FoldNumber = 25
			var stayFolded = false
			foldImg = 0
			mainOffsetY = 0

			var unImg=new Image();
			unImg.src='foldoutmenu_arrow.gif'

			var exImg=new Image();
			exImg.src='foldoutmenu_arrow_open.gif'

			var px = bw.ns4||window.opera?"":"px";

			if(navigator.userAgent.indexOf('Opera')>-1 && document.getElementById){ //Opera 5 resize fix.
				scrX= innerWidth; scrY= innerHeight;
				document.onmousemove= function(){
					if(scrX<innerWidth-10 || scrY<innerHeight-10 || scrX>innerWidth+10 || scrY>innerHeight+10){
						scrX = innerWidth;
						scrY = innerHeight;
						initFoldout();
					}
				};
			}

			function makeMenu(obj,nest){
				nest= (!nest)?"":'document.'+nest+'.';
				this.el= bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):document.getElementById(obj);	
			   	this.css= bw.ns4?this.el:this.el.style;
				this.ref= bw.ns4?this.el.document:document;		
				this.x= (bw.ns4||bw.opera5)?this.css.left:this.el.offsetLeft;
				this.y= (bw.ns4||bw.opera5)?this.css.top:this.el.offsetTop;
				this.h= (bw.ie||bw.ns6)?this.el.offsetHeight:bw.ns4?this.ref.height:bw.opera5?this.css.pixelHeight:0;
			    	this.vis= b_vis;
				this.hideIt= b_hideIt;
				this.showIt= b_showIt;
			    	this.moveIt= b_moveIt;
				return this
			}

			function b_showIt(){this.css.visibility='visible'}
			function b_hideIt(){this.css.visibility='hidden'}
			function b_vis(){if(this.css.visibility=='hidden' || this.css.visibility=='HIDDEN' || this.css.visibility=='hide') return true;}
			function b_moveIt(x,y){this.x=x; this.y=y; this.css.left=this.x+px; this.css.top=this.y+px}

			function menu(num){
				if(bw.bw){
					if (!stayFolded){
						for (var i=0; i<oSub.length; i++){
							if (i!=num){
								oSub[i].hideIt()
								if (foldImg)oTop[i].ref["imgA"+i].src = unImg.src
							}
						}
						for(var i=1; i<oTop.length; i++){
							oTop[i].moveIt(0,oTop[i-1].y+oTop[i-1].h)
						}
					}
					if (oSub[num].vis()){
						oSub[num].showIt()
						if (foldImg)oTop[num].ref["imgA"+num].src = exImg.src
					}else{
						oSub[num].hideIt()
						if(foldImg)oTop[num].ref["imgA"+num].src = unImg.src
					}
					for(var i=1; i<oTop.length; i++){ 
						if (!oSub[i-1].vis()) oTop[i].moveIt(0,oTop[i-1].y+oTop[i-1].h+oSub[i-1].h+mainOffsetY) 
						else oTop[i].moveIt(0,oTop[i-1].y+oTop[i-1].h+mainOffsetY)
					}
				}
			}

			function initFoldout(){
				bw.opera5 = (navigator.userAgent.indexOf("Opera")>-1 && document.getElementById)?true:false
				if (bw.opera5) bw.ns6 = 0

				oTop = new Array()
				oSub = new Array()
					for (var i=0; i<FoldNumber; i++){
					oTop[i] = new makeMenu('divTop'+i,'divCont')
					oSub[i] = new makeMenu('divSub'+i,'divCont.document.divTop'+i)
					oSub[i].hideIt()
				}

				oTop[0].moveIt(0,0)
				for (var i=1; i<oTop.length; i++){
					oTop[i].moveIt(0, oTop[i-1].y+oTop[i-1].h+mainOffsetY)
				}

				oCont = new makeMenu('divCont')
				oCont.showIt()
			}

			if(bw.bw) onload = initFoldout;