function toggle_visibility(id) {
var e = document.getElementById(id);
if(id=="tb1")
{
	var f = document.getElementById("tb2");
	var g = document.getElementById("tb3");
	var h = document.getElementById("tb4");
	e.style.display = 'block';
	f.style.display = 'none';
	g.style.display = 'none';
	h.style.display = 'none';
}

if(id=="tb2")
{
	var f = document.getElementById("tb1");
	var g = document.getElementById("tb3");
	var h = document.getElementById("tb4");
	e.style.display = 'block';
	f.style.display = 'none';
	g.style.display = 'none';
	h.style.display = 'none';
}

if(id=="tb3")
{
	var f = document.getElementById("tb1");
	var g = document.getElementById("tb2");
	var h = document.getElementById("tb4");
	e.style.display = 'block';
	f.style.display = 'none';
	g.style.display = 'none';
	h.style.display = 'none';
}
if(id=="tb4")
{
	var f = document.getElementById("tb1");
	var g = document.getElementById("tb2");
	var h = document.getElementById("tb3");
	e.style.display = 'block';
	f.style.display = 'none';
	g.style.display = 'none';
	h.style.display = 'none';
}
}
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_randomImages() { //v3.0
  var d=document;
  if(d.images) { 
	if(!d.MM_rs){
		if (	MM_randomImages.arguments){
			d.MM_rs = MM_randomImages.arguments; 
		}
	}
    var i;
	var a = (MM_randomImages.arguments?MM_randomImages.arguments:d.MM_rs);

		}
	}
	var iteration = 0;
	var action = true;
	var p = function(txt){
		$('debug').innerHTML+='<br/>'+txt;
	}


function MM_swapImgRestore() { //v3.0
  action = true;
  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_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
	action = false;
  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];
	}													  
}