function browserCheck(){
		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 browserCheck()

//show hide script met timeout
var check=0;
var objT;
function showhide(div,nest){
	objT=bw.dom?"document.getElementById('"+div+"').style":bw.ie4?"document.all['"+div+"'].style":bw.ns4?"document.layers['"+div+"']":0; 
	obj = eval(objT);
	if(obj.visibility=='visible' || obj.visibility=='show'){
		check = setTimeout(objT+".visibility='hidden';",500);
	}else{
		obj.visibility='visible';
	}
}