function correctPNG() //handle PNG transparency in IE 6
{
 for(var i=0; i < document.images.length; i++)
 {
  var img = document.images[i]
  var imgName = img.src.toUpperCase()
    
  if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
  {
   var imgID = (img.id) ? "id='" + img.id + "' " : "";
   var imgClass = (img.className) ? "class='" + img.className + "' " : "";
   var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' ";
   var imgStyle = "display:inline-block;" + img.style.cssText;
   
   if (img.align == "left") imgStyle = "float:left;" + imgStyle;
   
   if (img.align == "right") imgStyle = "float:right;" + imgStyle;
   
   if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle;		
   
   var strNewHTML = "<span " + imgID + imgClass + imgTitle
   + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
   + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
   + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
   img.outerHTML = strNewHTML
   i = i-1
  }
 }
}

function startList() //correct onmouseover event for ListItems in IE 6
{
	if (document.all&&document.getElementById) 
	{
		navRoot = document.getElementById("nav");
		
		for ( i = 0; i < navRoot.childNodes.length; i++) 
		{
			node = navRoot.childNodes[i];
			if (node.nodeName == "LI") 
			{
				node.onmouseover = function() 
				{
					this.className += " over";
				}
				node.onmouseout = function() 
				{
					this.className = this.className.replace(" over", "");
				}
			}
		}
	}
}

function hideCheckboxTable( tableElement )
{
 if( tableElement )
 {
  tableElement.style.position = 'absolute';
  tableElement.style.visibility = 'hidden';
 }
}

function showCheckBoxTable( str )
{
 var str = str.toLowerCase();
 
 var arr = ["bedrijfsuitje","bootcamp","kinderfeestje","locatieverhuur"];
 
 for(var i=0; i < arr.length; i++ )
 {
  hideCheckboxTable( document.getElementById( arr[i]+'Onderdelen' ) );
  hideCheckboxTable( document.getElementById( arr[i]+'Opties' ) );
 }
 
 var tableOnderdelen = document.getElementById( str + 'Onderdelen' );
 var tableOpties     = document.getElementById( str + 'Opties' );
 
 if( tableOnderdelen )
 {
  tableOnderdelen.style.position = 'relative';
  tableOnderdelen.style.visibility  = 'visible';
 }
 
 if( tableOpties )
 {
  tableOpties.style.position = 'relative';
  tableOpties.style.visibility  = 'visible';
 }
}

window.onload = function()
{
 var supported = /MSIE ((5\.5)|(6))/.test(navigator.userAgent) && navigator.platform == "Win32";
 
 if( supported )
 {
  startList();
  correctPNG();
 }
 showCheckBoxTable( 'bedrijfsuitje' );
 enableTooltips();
}