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_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_findObj(n, d) { //v4.0
  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);
  if(!x && document.getElementById) x=document.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 sfcnav_mainNum = 0;
 var sfcnav_subTimer = 0;	// Subnav timer
var sfcnav_subIn = false;	// Subnav semaphore
var sfcnav_subNum = 8;		// Number of subnav items

// Highlight image
function sfcnav_mainOn(id) {
	document.getElementById("sfcnav_main" + id).src = "images/sfcnav" + id + "_on.gif";
}

// Turn off image highlight
function sfcnav_mainOff(id) {
	document.getElementById("sfcnav_main" + id).src = "images/sfcnav" + id + "_off.gif";
}

// Show Subnav
function sfcnav_subShow(id) {
	clearTimeout(sfcnav_subTimer);
	sfcnav_subHide();
	if (id) {
		sfcnav_mainOn(id);
		document.getElementById("sfcnav_sub" + id).style.visibility = "visible";
	}
}

// Hide All Subnavs
function sfcnav_subHide() {
	for (i=1; i<=sfcnav_subNum; i++) {
		theSub = document.getElementById("sfcnav_sub" + i);
		if (!sfcnav_subIn && theSub) {
			sfcnav_mainOff(i);
			theSub.style.visibility = "hidden";
		}		
	}
}

// Set Subnav On
function sfcnav_subOn() {
	clearTimeout(sfcnav_subTimer);
	sfcnav_subIn = true;
}

// Set Subnav Off
function sfcnav_subOff() {
	clearTimeout(sfcnav_subTimer);
	sfcnav_subIn = false;
	sfcnav_subTimer = setTimeout("sfcnav_subShow(sfcnav_mainNum);",500);
}