var lastLayer;
function switchLayer(item) {
	obj=document.getElementById(item);
	
	if(lastLayer){
		lastLayer.style.display="none";
	}

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];}}
}

	obj.style.display="block";
	lastLayer = obj;		
}

function Toggle(item) {
	obj=document.getElementById(item);
	visible=(obj.style.display!="none")
	
	if (visible){
		obj.style.display="none";
	} else {
		obj.style.display="block";
	}
}

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];}}
}