// JavaScript Document
var previous = -1;
var allMenus = new Array('menu_algemeen', 'menu_procedures', 'menu_voorlichting', 'menu_uitvoering', 'menu_producten');
var imglocation = 'http://www.rulecam.net/work/design/noorderpark/images/';
var doMouseOver = new Array(true, true, true, true, true);

function initMenus(num)
{
	closeAll();
	// todo: check if name != ''
	showMenu(num);
}

function showMenu(num)
{
	// close previously opened one
	if (num != previous)
	{
		if (previous != -1)
		{
			// close previous and restore onmouseout behaviour
			closeMenu(previous);
			//document.getElementById(previous+'_a').setAttribute("onmouseout", "MM_swapImgRestore()");
			//MM_swapImgRestore();
			MM_swapImage(allMenus[previous],'',imglocation+''+allMenus[previous]+'.gif',1);
		}
		var toUnfold = document.getElementById(allMenus[num]+'_inhoud');
		if (toUnfold.style.display == 'none')
		{
			toUnfold.style.display = '';
		}
		
		// highlight image and restore image behaviour
		MM_swapImage(allMenus[num],'',imglocation+''+allMenus[num]+'_f2.gif',1);
		//document.getElementById(name+'_a').setAttribute("onmouseout", "");
		doMouseOver[num] = false;
		previous = num;
	}
}

function closeMenu(num)
{
	var toClose = document.getElementById(allMenus[num] + '_inhoud');
	toClose.style.display = 'none';
	doMouseOver[num] = true;
}

function closeAll()
{
	for (var i = 0; i < allMenus.length; ++i)
	{
		closeMenu(i);
	}
}

function MM_swapImgRestore(num) { 
	if (doMouseOver[num])
	{//v3.0
  		var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
	}
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}