function findObject(n, d) {
  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=findObject(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function preloadImages() {
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=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="/menu_images/"+a[i];}}
}

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

function getPageName() {
	var page = new String(window.location);

	page.match(/\/([^\/]+?)\/[^\/]*$/);
	return RegExp.$1;
}

function greyOutButton() {
	var page = getPageName();
	var x = findObject(page);
	x.src = "/menu_images/"+page+'_on.png';
	x.onmouseover; //that is necessary because firefox is made of monkey arses
	x.onmouseover = "";
	x.onmouseout; //that is necessary because firefox is made of monkey arses
	x.onmouseout = "";
}