// JavaScript Document
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 setI(layer) {
	document.getElementById(layer).style.display = 'block';
	document.getElementById(layer).style.zIndex = 1;
}
function clearI() {
	for (var i = 0; i < document.getElementsByTagName("ul").length; i++) {
    	document.getElementsByTagName("ul")[i].style.display = 'none';
	}
	document.getElementById('top_level').style.display = 'block';
}