var n = (document.layers) ? 1:0;
var ie = (document.all) ? 1:0;

function checkBrowser(){
	this.ver=navigator.appVersion
	this.dom=document.getElementById?1:0
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
	this.ie4=(document.all && !this.dom)?1:0;
	this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;
	this.ns4=(document.layers && !this.dom)?1:0;
	return this
}
bw = new checkBrowser()

function show(div){
	if(bw.dom){ 
	//If the browser supports the DOM standard, let's get the object the DOM way.
		obj=document.getElementById(div).style
	}else if(bw.ie4){ 
	//If the browser is ie4, get the object the ie4 way
		obj=document.all[div].style
	}else if(bw.ns4){ 
	//If the browser is ns4, get the object the ns4 way
		obj=document.layers[div]
	}
	obj.visibility='visible' 
}

function hide(div){
	if(bw.dom){ 
	//If the browser supports the DOM standard, let's get the object the DOM way.
		obj=document.getElementById(div).style
		obj.visibility='hidden' 
	}else if(bw.ie4){ 
	//alert(event.srcElement.tagName);
		//If the browser is ie4, get the object the ie4 way
		obj=document.all[div].style
		obj.visibility='hidden' 
	}else if(bw.ns4){ 
	//If the browser is ns4, get the object the ns4 way
		obj=document.layers[div]
		obj.visibility='hide' 
	}
	
}

function HideAll(){
if(bw.ie4){
hide('centerLayer2');
hide('centerLayer3');
hide('centerLayer4');
}
}


function clickShow(layer, spacer){
	show(layer);
	
	if (spacer) {
	show(spacer);
	}
}

function nothing()
{

}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

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
if(bw.ie4){
event.cancelBubble = true;
}
  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) { //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;
}