var w=1
var h=1

if (document.getElementById || document.all)
document.write('<div id="trailimageid" style="position:absolute;visibility:hidden;left:0px;width:1px;height:1px;z-index:3;"></div>')

function gettrailobj()
{
	if (document.getElementById) return document.getElementById("trailimageid").style
	else if (document.all) return document.all.trailimagid.style
}

function truebody()
{
	return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function hidetrail()
{
	document.onmousemove=""
	//document.getElementById('ttimg').src='img/s.gif'
	gettrailobj().visibility="hidden"
	gettrailobj().left=-1000
	gettrailobj().top=0
}


function showtrail(width,height,titel,door)
{
	if(navigator.userAgent.toLowerCase().indexOf('opera') == -1 && navigator.userAgent.toLowerCase().indexOf('safari') == -1)
	{
		w=width
		h=height
		
		// followmouse()
		
		gettrailobj().visibility="visible"
		gettrailobj().width=w+"px"
		//gettrailobj().height=h+"px"
		if(width == 100 || width == 300){
			document.getElementById('trailimageid').innerHTML = "<div class=\"tip_kop\">ingezonden door: "+titel+"</div>";
		}
		else{
			document.getElementById('trailimageid').innerHTML = "<div class=\"tip_kop\">"+titel+"</div>";
		}
		if(door != ""){
			document.getElementById('trailimageid').innerHTML += "<div class=\"tip_tekst\">"+door+"</div>";
		}
		document.onmousemove=followmouse
	}
}


function followmouse(e)
{

	if(navigator.userAgent.toLowerCase().indexOf('opera') == -1 && navigator.userAgent.toLowerCase().indexOf('safari') == -1)
	{

	var xcoord=10
	var ycoord=10

	if (typeof e != "undefined")
	{
		xcoord+=e.pageX
		ycoord+=e.pageY
	}
	else if (typeof window.event !="undefined")
	{
		xcoord+=truebody().scrollLeft+event.clientX
		ycoord+=truebody().scrollTop+event.clientY
	}
	
	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)

	if (xcoord+w+3>docwidth)
	xcoord=xcoord-w-(20*2)

	
	ycoord=ycoord-h+20;
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"
	}
}

function showExtra(wat){

	if(document.getElementById(wat).style.visibility == "visible"){
		document.getElementById(wat).style.visibility = "hidden";
	}
	else{
		document.getElementById(wat).style.visibility = "visible";
	}
}