function showmenu(elmnt) {
  document.getElementById(elmnt).style.visibility="visible"
}

function hidemenu(elmnt) {
  document.getElementById(elmnt).style.visibility="hidden"
}

var win = null;
function newWindow(page,name,w,h,features) {
  var winl = (screen.width-w)/2;
  var wint = (screen.height-h)/2;
  if (winl < 0) winl = 0;
  if (wint < 0) wint = 0;
  var settings = 'height=' + h + ',';
  settings += 'width=' + w + ',';
  settings += 'top=' + wint + ',';
  settings += 'left=' + winl + ',';
  settings += features;
  win = window.open(page,name,settings);
  win.window.focus();
}

var i=-45
var intHide
var speed=3
function showSlidemenu() {
  clearInterval(intHide)
  intShow=setInterval("showSlide()",10)
}

function hideSlidemenu() {
  clearInterval(intShow)
  intHide=setInterval("hideSlide()",10)
}

function showSlide() {
  if (i<45) {
	i=i+speed
	document.getElementById('myMenu').style.top=i
	document.getElementById('myMenu').style.visibility="visible"
	}
}

function hideSlide() {
if (i>-45) {
	i=i-speed
	document.getElementById('myMenu').style.top=i
	document.getElementById('myMenu').style.visibility="hidden"
	}
}

var backColor = new Array();

backColor[0] = '#FF0000';
backColor[1] = '#00FF00';
backColor[2] = '#0000FF';
backColor[3] = '#FFFFFF';

function changeBG(whichColor){
document.bgColor = '#FFFFFF';
}

	
	//slideshow functions for grandprix site
	function startSlideShow(){setTimeout("pic1()",3000);}
	function pic1(){document.images.slidepix.src="pics/sponsor_kolmschot.jpg";
	setTimeout("pic2()",3000);}	
	function pic2(){document.images.slidepix.src="pics/sponsor_moekotte.jpg";
        setTimeout("pic3()",3000);}
	function pic3(){document.images.slidepix.src="pics/sponsor_wapen.jpg";
	setTimeout("pic4()",3000);}
	function pic4(){document.images.slidepix.src="pics/sponsor_lsh2008.jpg";
	setTimeout("pic5()",3000);}
	function pic5(){document.images.slidepix.src="pics/sponsor_euregio.jpg";
	setTimeout("pic6()",3000);}
	function pic6(){document.images.slidepix.src="pics/sponsor_eads.jpg";
	setTimeout("pic7()",3000);}
	function pic7(){document.images.slidepix.src="pics/sponsor_boeskoolfonds.gif";
	//setTimeout("pic6()",3000);}
	//function pic6(){document.images.slidepix.src="pics/sponsor_moekotte.jpg";
	//
	//setTimeout("pic8()",3000);}
	//function pic8(){document.images.slidepix.src="pics/bmc.jpg";
	//setTimeout("pic9()",3000);}
	//function pic9(){document.images.slidepix.src="pics/kaptein.jpg";
	setTimeout("pic1()",3000);}