var	bNS = ( navigator.appName == "Netscape" ) ? true : false;
var	bVer = ( navigator.appVersion.charAt(0) >= "4" ) ? true : false;
var	CurSel = null;

function SetLayer( layerName )
{
	if( bNS )
	{
		var layerRef = eval("document." + layerName);
	} 
	else
	{
		var layerRef = eval("document.all." + layerName + ".style");
	}
	
	return layerRef;
}

function Show( objDiv )
{
	objDiv = SetLayer( objDiv );
	if ( objDiv == CurSel )
	{
		return;
	}
	
	HideCurSel();
	objDiv.visibility = "visible";

}

function Hide( objDiv )
{
	objDiv = SetLayer( objDiv );
	if ( objDiv == CurSel ) return;
	if ( objDiv != CurSel )
	{
		objDiv.visibility = "hidden";
	}
	ShowCurSel();
}

function ShowPermanent( objDiv )
{
	objDiv = SetLayer( objDiv );
	HideCurSel()
	CurSel = objDiv;
	objDiv.visibility = "visible";
}

function HideCurSel()
{
	if ( CurSel != null )
	{
		CurSel.visibility = "hidden";
	}
}


function ShowCurSel()
{
	if ( CurSel != null )
	{
		CurSel.visibility = "visible";
	}
}

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) { //v4.0
  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];}
}