function MM_swapImgRestore() { //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_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];}
}

function MM_findObj(n, d) { //v3.0
  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); return x;
}

function show(n) {
  var subNav = document.getElementById('sub'+n)
  var nav = document.getElementById('nav'+n)
  for (var i = 1; i<=10; i++) {
    if (document.getElementById('sub'+i)) {document.getElementById('sub'+i).style.display='none';}
  }
  if (subNav) {
    subNav.style.display = 'block';
    opacity('sub'+n,0,100,0.5);
  }
}

function resize(n) {
  document.body.style.fontSize = n+'em';
}

function opacity(id, opacStart, opacEnd, secs) { 
  speed = Math.round(secs * 10) //speed for each frame
  timer = 0
  if(opacStart > opacEnd) { //determine the direction for the blending
  for(i = opacStart; i >= opacEnd; i--) { 
    setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
    timer++; 
  } 
  } else if(opacStart < opacEnd) { 
    for(i = opacStart; i <= opacEnd; i++) 
      { 
      setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
      timer++; 
    }
	//document.getElementById(id).style.filter = "none"
  } 
} 
//change the opacity for different browsers 
function changeOpac(opacity, id) { 
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100); 
	object.MozOpacity = (opacity / 100); 
	object.KhtmlOpacity = (opacity / 100); 
	object.filter = "alpha(opacity=" + opacity + ")"; 
}