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];}
}


//the following fxns manage the visibility property of the flyout images
//that appear to the right of the four main navigation node images
//@connor.doyle :: 2/2/07

function hideFlyouts() {

	//this fxn runs onload.
	
	//safari on osX requires the initial value of the visibility
	//property to be set to "visible", otherwise the flyout images will
	//never show up.  therefore, we must hide them all now.
	
	document.getElementById("flyout0").style.visibility="hidden";
	document.getElementById("flyout1").style.visibility="hidden";
	document.getElementById("flyout2").style.visibility="hidden";
	document.getElementById("flyout3").style.visibility="hidden";
	
	//in the stylesheet, the containing div is invisible initially.
	
	//now that the images are invisible, we can safely show the
	//containing div element, avoiding a distractive blinking effect...
	
	document.getElementById("flyouts").style.visibility="visible";
}

//these should be relatively self-explanatory:
//they are called by the onmouseover and onmouseout behaivors
//of the main nav images...

function toggleFlyoutDiv() {
	if( document.getElementById("flyouts").style.width == "1px" ) {
		document.getElementById("flyouts").style.width = "auto";
	} else {
		document.getElementById("flyouts").style.width = "1px";
	}
}

function showFlyout0() {
	toggleFlyoutDiv();
	document.getElementById("flyout0").style.visibility="visible";
}

function hideFlyout0() {
	toggleFlyoutDiv();
	document.getElementById("flyout0").style.visibility="hidden";
}

function showFlyout1() {
	toggleFlyoutDiv();
	document.getElementById("flyout1").style.visibility="visible";
}

function hideFlyout1() {
	toggleFlyoutDiv();
	document.getElementById("flyout1").style.visibility="hidden";
}

function showFlyout2() {
	toggleFlyoutDiv();
	document.getElementById("flyout2").style.visibility="visible";
}

function hideFlyout2() {
	toggleFlyoutDiv();
	document.getElementById("flyout2").style.visibility="hidden";
}

function showFlyout3() {
	toggleFlyoutDiv();
	document.getElementById("flyout3").style.visibility="visible";
}

function hideFlyout3() {
	toggleFlyoutDiv();
	document.getElementById("flyout3").style.visibility="hidden";
}