function MenuOver(id)
{
	var element			=	document.getElementById(id);
	element.style.backgroundImage	=	"url('http://www.u-staat-centraal.nl/images2/menuPijl.jpg')";
	element.style.cursor='pointer';
}

function MenuOut(id, image)
{
	var element			=	document.getElementById(id);
	if(image == 'x')
	{
	  var image = "http://www.u-staat-centraal.nl/images/headerMenuPijlVol.gif";	
	}
	element.style.backgroundImage	=	"url('"+image+"')";
}




function WijzigAchtergrondAfbeelding(image, id)
{
	var element			=	document.getElementById(id);
	element.style.backgroundImage	=	"url("+image+")";
}

function WijzigAchtergrondKleur(kleur, id)
{
	var element			=	document.getElementById(id);
	element.style.backgroundColor	=	"#"+kleur+"";
}


function WijzigBreedte(breedte, id)
{
	var element			=	document.getElementById(id);
	element.style.width		=	breedte;
}


function HideDiv(d)
{
	if(d.length < 1)
	{
		return;
	}
	document.getElementById(d).style.display = "none";
}

function ShowDiv(d)
{
	if(d.length < 1)
	{
	return;
	}
	document.getElementById(d).style.display = "block";
}

function zoekenUitgebreid()
{
    document.getElementById('box_zoeken_groot').style.height=282+'px';
    HideDiv('box_zoeken_klein');
    ShowDiv('box_zoeken_groot');
}

function veldLegen(veld, standaardtekst)
{
  if(veld.value == standaardtekst)
  {
    veld.value = "";
  }
}

function veldHervullen(veld, standaardtekst)
{
  if(veld.value == "")
  {
    veld.value = standaardtekst;
  }
}





function NewWindow(mypage,myname,w,h,pos,infocus)
{
	if(pos=="random"){
		myleft=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;
		mytop=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;
	}
	if(pos=="center"){
		myleft=(screen.width)?(screen.width-w)/2:100;
		mytop=(screen.height)?(screen.height-h)/2:100;
	}
	else if((pos!='center' && pos!="random") || pos==null){
		myleft=0;
		mytop=20;
	}
	settings="width=" + w + ",height=" + h + ",top=" + mytop + ",left=" + myleft + ",scrollbars=no,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no";win=window.open(mypage,myname,settings);
	win.focus();
}