//----------------------------------------------------------

function preloadImg() {
	var d=document;
	if(d.images){
		if(!d.img) d.img=new Array();
		var i,j=d.img.length,a=preloadImg.arguments;
		for(i=0; i<a.length; i++)
    	if (a[i].indexOf("#")!=0){
    		d.img[j]=new Image;
    		d.img[j++].src=a[i];
    	}
  }
}
//----------------------------------------------------------
function getLayer(name) {
	if (is.ns4)
		return findLayer(name, document);
	if (is.ie && !is.dom)
		return eval('document.all.' + name);
	if (is.dom)
		return document.getElementById(name);
	return null;
}

function findLayer(name, doc) {
	var i, layer;

	for (i = 0; i < doc.layers.length; i++) {
		layer = doc.layers[i];
		if (layer.name == name)
			return layer;
		if (layer.document.layers.length > 0)
			if ((layer = findLayer(name, layer.document)) != null)
				return layer;
	}
	return null;
}
//----------------------------------------------------------

function findObj(n, d) {
	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=findObj(n,d.layers[i].document);
	if(!x && document.getElementById) x=document.getElementById(n);
	return x;
}
//--------------------------------------------------

function hideLayer(layer) {
	if (is.ns4){
		layer.visibility = "hide"
	}else{
		layer.style.visibility = "hidden"
	};
}

function showLayer(layer) {
	if (is.ns4){
		layer.visibility = "show"
	}else{
		layer.style.visibility = "visible"
	};
}

function getVisibility(layer) {

	if (is.ns4) {
		if (layer.visibility == "show")
			return "visible";
		if (layer.visibility == "hide")
			return "hidden";
		return layer.visibility;
	}else{
		return layer.style.visibility
	};
	return "";
}

//--------------------------------------------------

function moveLayerTo(layer, x, y) {
	if (is.ns4){
		layer.moveTo(x, y);
	}else{
		layer.style.left = x;
		layer.style.top  = y
	};
}

//--------------------------------------------------

function getImage(name) {
	if (is.ns4){
		return findImage(name, document)
	};
	if (is.ie && !is.dom){
		return eval('document.all.' + name)
	};
	if (is.dom){
		return document.getElementById(name);
	}
	return null;
}

function findImage(name, doc) {
	var i, img;

	for (i = 0; i < doc.images.length; i++)
		if (doc.images[i].name == name)
			return doc.images[i];
	for (i = 0; i < doc.layers.length; i++)
		if ((img = findImage(name, doc.layers[i].document)) != null) {
			img.container = doc.layers[i];
			return img;
		}
	return null;
}

function getImagePageLeft(img) {
	var x, obj;

	if (is.ns4) {
		if (img.container != null)
			return img.container.pageX + img.x;
		else
			return img.x;
	}else{
		x = 0;
		obj = img;
		while (obj.offsetParent != null) {
			x += obj.offsetLeft;
			obj = obj.offsetParent;
		}
		x += obj.offsetLeft;
		return x;
	};
	return -1;
}

function getImagePageTop(img) {
	var y, obj;
	if (is.ns4) {
		if (img.container != null)
			return img.container.pageY + img.y;
		else
			return img.y;
	}else{
		y = 0;
		obj = img;
		while (obj.offsetParent != null) {
			y += obj.offsetTop;
			obj = obj.offsetParent;
		}
		y += obj.offsetTop;
		return y;
	};
	return -1;
}