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_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;
}

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 to load an external page and return a
//	string with the contents of that page
function loadext(url) {
	var page_request = false;
	if (window.XMLHttpRequest) { // if Mozilla, Safari etc
		page_request = new XMLHttpRequest();
	} else if (window.ActiveXObject) { // if IE
		try {
			page_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				page_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
			}
		}
	} else {
		return false;
	}

	page_request.open('GET', url, false) //get page synchronously 
	page_request.send('');
	return page_request.responseText;
}


function resetNav(whichLayer) {
	toggleLayer(whichLayer);
	clearTimeout(timeOut);
}

function stopTimer () {
	clearTimeout(timeOut);
}

var timeOut = null;

function startTimer (whichLayer) {
	timeOut = setTimeout('resetNav("'+whichLayer+'")',250);
}

// swap HTML content functions ---------------------------------------------
// returns an element by its ID
function getElement(elementId) {
	var element = null;
	
	if (document.getElementById) {
		// this is the way the standards work
		element = document.getElementById(elementId);
	} else if (document.all) {
		// this is the way old msie versions work
		element = document.all[elementId];
	} else if (document.layers) {
		// this is the way nn4 works
		element = document.layers[elementId];
	}
	
	return element;
	
}

function clearElement(element) {
	while (getElement(element).hasChildNodes()) {
		getElement(element).removeChild(getElement(element).childNodes[0]);
	}
	setInnerHTML(element, "");
}

// cross-browser inner-html implementation
function setInnerHTML(element, html) {
	if (document.getElementById) {
 		getElement(element).innerHTML= html;
	} else {
 		getElement(element).document.open();
 		getElement(element).document.write(html);
 		getElement(element).document.close();
	}
}

function showById(element, showIt) {
	if (document.getElementById) {
		// hide all at first
		document.getElementById(element).style.display = showIt ? "block" : "";
	}
	else if (document.all) {
	// old IE browser support
	// hide all at first
		document.all[element].style.display = showIt ? "block" : "";
		}
	else if (document.layers) {
	// nn4 browser support
	// hide all at first
		document.layers[element].style.display = showIt ? "block" : "";
	}
}

// end swap HTML content functions ---------------------------------------------