<!--
/* layerlib.js: Simple Layer library with basic compatibility checking */

/* detect objects */
if (document.layers) layerobject=true; else layerobject=false;
if (document.all) allobject = true; else allobject = false;
if (document.getElementById) dom = true; else dom = false;

/* detect browsers */
opera=navigator.userAgent.toLowerCase().indexOf('opera')!=-1;

/* return the object for the passed layerName value */
function getElement(layerName,parentLayer)
{
	if(layerobject)
	{
		parentLayer = (parentLayer)? parentLayer : self;

		layerCollection = parentLayer.document.layers;
		if (layerCollection[layerName]) {
			return layerCollection[layerName];
		}

		/* look through nested layers */
		for(i=0; i < layerCollection.length;)
			return(getElement(layerName, layerCollection[i++]));
	}

	if (allobject)
		return document.all[layerName];

	if (dom)
		return document.getElementById(layerName);
}

/* hide the layer with id = layerName */
function hide(layerName)
{
	var theLayer = getElement(layerName);
	if (layerobject)
		theLayer.visibility = 'hide';
	else
		theLayer.style.visibility = 'hidden';
}

/* show the layer with id = layerName */
function show(layerName)
{
	var theLayer = getElement(layerName);
	if (layerobject)
		theLayer.visibility = 'show';
	else
		theLayer.style.visibility = 'visible';
}

/* set the x-coordinate of layer named layerName */
function setX(layerName, x)
{
	var theLayer = getElement(layerName);
	if (layerobject)
		theLayer.left=x;
	else if (opera)
		theLayer.style.pixelLeft=x;
	else
		theLayer.style.left=x+"px";
}

/* set the y-coordinate of layer named layerName */
function setY(layerName, y)
{
	var theLayer = getElement(layerName);
	if (layerobject)
		theLayer.top=y;
	else if (opera)
		theLayer.style.pixelTop=y;
	else
		theLayer.style.top=y+"px";
}

/* set the z-index of layer named layerName */
function setZ(layerName, zIndex)
{
	var theLayer = getElement(layerName);
	if (layerobject)
		theLayer.zIndex = zIndex;
	else
		theLayer.style.zIndex = zIndex;
}
/* set the height of layer named layerName */
function setHeight(layerName, height)
{
	var theLayer = getElement(layerName);
	if (layerobject)
		theLayer.clip.height = height;
	else if (opera)
		theLayer.style.pixelHeight = height;
	else
		theLayer.style.height = height+"px";
}

/* set the width of layer named layerName */
function setWidth(layerName, width)
{
	var theLayer = getElement(layerName);
	if (layerobject)
		theLayer.clip.width = width;
	else if (opera)
		theLayer.style.pixelWidth = width;
	else
		theLayer.style.width = width+"px";
}

/* get the width of layer named layerName (added DMT) */
function getWidth(layerName)
{
	var theLayer = getElement(layerName);
	if (layerobject)
		return theLayer.clip.width;
	else if (opera)
		return theLayer.style.pixelWidth;
	else
		return theLayer.style.width;//.slice(0,-3);
}

/* set the clipping rectangle on the layer named layerName
defined by top, right, bottom, and left */
function setClip(layerName, top, right, bottom, left)
{
	var theLayer = getElement(layerName);
	if (layerobject)
	{
		theLayer.clip.top = top;
		theLayer.clip.right = right;
		theLayer.clip.bottom = bottom;
		theLayer.clip.left = left;
	}
	else
		theLayer.style.clip = "rect("+top+"px "+right+"px "
			+" "+bottom+"px "+left+"px )";
}

/* set the contents of layerName to passed content*/
function setContents(layerName, content)
{
	var theLayer = getElement(layerName);
	if (layerobject)
	{
		theLayer.document.write(content);
		theLayer.document.close();
		return;
	}
	if (theLayer.innerHTML)
		theLayer.innerHTML = content;
}

/* Reload window in Nav 4 to preserve layout when resized */
function reloadPage(initialload)
{
	if (initialload==true)
	{
		if ((navigator.appName=="Netscape") && (parseInt(navigator.appVersion)==4))
		{
			/* save page width for later examination */
			document.pageWidth=window.innerWidth;
			document.pageHeight=window.innerHeight;
			/* set resize handler */
			onresize=reloadPage;
		}
	}
	else if (innerWidth!=document.pageWidth || innerHeight!=document.pageHeight)
		location.reload();
}

/* call function right away to fix bug */
reloadPage(true);

//-->