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];}
}

var screen_width = window.screen.width;
var screen_height = window.screen.height;

function show_element(name, show) {
	
	var p = document.getElementById(name);
	
	switch (show) {
		case 1:
			p.style.visibility = 'visible';
			break;
		case 0:
			p.style.visibility = 'hidden';
			break;
		case -1:
			p.style.visibility = p.style.visibility == 'visible' ? 'hidden' : 'visible';
			break;
	}
	
}

function chooseYear() {
	
	var args = chooseYear.arguments;
	
	for (var i = 0 ; i < args.length - 1; i += 1) {
		var y = document.getElementById('year_' + args[i]);
		if (y) {
			y.style.display = 'none';
		}
	}
	
	ys = document.getElementById("years");
	
	for (var i = 0; i < ys.childNodes.length; i += 1) {
		curr = ys.childNodes[i]
		if (curr.tagName && curr.tagName == "A" && curr.hasChildNodes() && curr.firstChild.tagName == "STRONG") {
			curr.innerHTML = curr.firstChild.innerHTML;
		}
	}
	
	if (args[args.length-1].className == "selected") {
		args[args.length-1].className = "";
		document.getElementById('year_' + args[0]).style.display = 'none';
		document.getElementById('year_0').style.display = 'block';
	}
	else {
		args[args.length-1].className = "selected";
		document.getElementById('year_' + args[0]).style.display = 'block';
	}
	
}