var check = "clear";
var check2 = "clear";
var tellen = 0;

function show(){
	document.getElementById('dropdown').style.filter = "alpha(opacity=" + tellen*10 + ")";
	document.getElementById('dropdown').style.opacity = "0." + tellen;
	document.getElementById('dropdown').style.visibility = "visible";
	if (tellen < 9){
		check2 = "notclear";
		tellen++;
		show();
	}else{
		document.getElementById('dropdown').style.filter = "alpha(opacity=100)";
		document.getElementById('dropdown').style.opacity = "1";
		check2 = "clear";
	}
}

function hide(){
	if (check2 == "clear"){
		document.getElementById('dropdown').style.filter = "alpha(opacity=" + tellen*10 + ")";
		document.getElementById('dropdown').style.opacity = "0." + tellen;
		if (tellen > -1){
			tellen--;
			hide();
		}else{
			document.getElementById('dropdown').style.visibility = "hidden";
		}
	}
}

function dropdown1(nummer){
	var positie1 = 76;
	var positie2 = document.getElementById(nummer).offsetLeft - 0;
	
	//inhoud van de menus
	if (nummer == 'tdButton'){
		
	}
	
	document.getElementById('dropdown').style.top = positie1 + 'px';
	document.getElementById('dropdown').style.left = positie2 + 'px';
	check = "notclear";
	show();
}


function dropdown2(){
	if (check == "clear"){
		hide();
	}
}

function dropdown3(){
	check = "clear";
	setTimeout("dropdown2()", 1);
}

function dropdown4(){
	check = "notclear";
	show();
}

function start(){
	var hoogte = document.getElementById('contentWrapper2').offsetHeight;
	var hoogte = hoogte-142;
	document.getElementById('menuWrapper2').style.height = hoogte+'px';
}

window.onload = start;
window.onunload = start;