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_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];}
}

	var bIsNC4 = (navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4);
	var bIsIE4 = (navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 );
	var bIsSupportOK = bIsNC4 || bIsIE4;

	var nMaxItem = 4;
	var NameIndex = 0;
	var DefaultState = 1;
	var MouseOverState = 2;
	var MouseDownState = 3;

	var imgCounter = 0;
	var ImageList = new Array();

	function AddImageToImageList(name, Default, MouseOver, MouseDown)
	{
		ImageList[imgCounter] = new Array(nMaxItem);
		ImageList[imgCounter][NameIndex] = name;
		ImageList[imgCounter][DefaultState] = new Image();
		ImageList[imgCounter][DefaultState].src = Default;
		if (MouseOver != "") {
			ImageList[imgCounter][MouseOverState] = new Image();
			ImageList[imgCounter][MouseOverState].src = MouseOver;
		}
		if (MouseDown != "") {
			ImageList[imgCounter][MouseDownState] = new Image();
			ImageList[imgCounter][MouseDownState].src = MouseDown;
		}

		imgCounter++;
	}

	function ReplaceImage(name, state)
	{
		if (bIsSupportOK) {
			for (i = 0; i < imgCounter; i++) {
				if (document.images[ImageList[i][NameIndex]] != null) {
					if ((name == ImageList[i][NameIndex]) && (ImageList[i][state] != null))
						document.images[name].src = ImageList[i][state].src;
				}
			}
		}
	}
	AddImageToImageList("rollover1", "/img/header/navi_1.gif", "/img/header/navi_1on.gif", "/img/header/navi_1.gif");
	AddImageToImageList("rollover2", "/img/header/navi_2.gif", "/img/header/navi_2on.gif", "/img/header/navi_2.gif");
	AddImageToImageList("rollover3", "/img/header/navi_3.gif", "/img/header/navi_3on.gif", "/img/header/navi_3.gif");