function get_element(element){
if (document.getElementById)
	elem = document.getElementById(element);
else if(document.all)
	elem = document.all(element);
else if(document.layers)
	elem = document.layers(element);
return elem;
}

function get_active_div(){
var active_div
//var divArray = document.getElementsByTagName('div');
//for (i=0; i<divArray.length; i++)
//	if (divArray[i].style.display == "block")
//	active_div = divArray[i];
//return active_div;
//}
var ijssoorten = ["toonniets","blokjes", "crushed", "scherfijs", "schilferijs", "nuggets" ];
for (i=0; i<ijssoorten.length; i++)
	if (document.getElementById(ijssoorten[i]).style.display == "block")
	active_div = document.getElementById(ijssoorten[i]);
return active_div;
}




function ShowHide(currentlayer)
{
//currentlayer = huidige layer
//active_div.id = te openen layer
//als currentlayer == active_div.id, dan geen actie

var vis, active_div;

vis = get_element(currentlayer).style;
active_div = get_active_div();

if (currentlayer != active_div.id){
	active_div.style.display = "none";
	vis.display = "block";
	}
else if (currentlayer = active_div.id){
	vis.display = "block";
	}	
}


/*
// KOPPEL DE TOOLTIP AAN DE MUISAANWIJZER || WORDT TOCH NIET GEBRUIKT!!!!
// Simple follow the mouse script
// div must be position: absolute
var offX = 15;          // X offset from mouse position
var offY = 15;          // Y offset from mouse position

function mouseX(evt) {if (!evt) evt = window.event; if (evt.pageX) return evt.pageX; else if (evt.clientX)return evt.clientX + (document.documentElement.scrollLeft ?  document.documentElement.scrollLeft : document.body.scrollLeft); else return 0;}
function mouseY(evt) {if (!evt) evt = window.event; if (evt.pageY) return evt.pageY; else if (evt.clientY)return evt.clientY + (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop); else return 0;}

function follow(evt) {
var active_div = get_active_div();	

	if (document.getElementById) {
			var obj = active_div.style; obj.visibility = 'visible';
				obj.left = (parseInt(mouseX(evt))+offX) + 'px';
				obj.top = (parseInt(mouseY(evt))+offY) + 'px';
			}
	}

document.onmousemove = follow;
*/