// This script is copyright (c) Henrik Petersen, NetKontoret
// Feel free to use this script on your own pages as long as you do not change it.
// It is illegal to distribute the script as part of a tutorial / script archive.
// Updated version available at: http://www.echoecho.com/toolfloatinglayer.htm
// This comment and the 4 lines above may not be removed from the code.

//floatX=10;
//floatY=10;
//layerwidth=100;
//layerheight=40;
//halign="right";			//right, center, left
//valign="center";		//top, center, bottom
//delayspeed=1;			//0, 1, 3

var floatX;
var floatY;
var layerwidth;
var layerheight;
var halign; 		//right, center, left
var valign; 	//top, center, bottom
var delayspeed; 		//0, 1, 3
var lastX = -1;
var lastY = -1;

NS6=false;
IE4=(document.all);
if (!IE4) {NS6=(document.getElementById);}
NS4=(document.layers);

function adjust(floatlayer) {
//function adjust() {

if ((NS4) || (NS6)) {
if (lastX==-1 || delayspeed==0)
{
lastX=window.pageXOffset + floatX;
lastY=window.pageYOffset + floatY;
}
else
{
var dx=Math.abs(window.pageXOffset+floatX-lastX);
var dy=Math.abs(window.pageYOffset+floatY-lastY);
var d=Math.sqrt(dx*dx+dy*dy);
var c=Math.round(d/10);
if (window.pageXOffset+floatX>lastX) {lastX=lastX+delayspeed+c;}
if (window.pageXOffset+floatX<lastX) {lastX=lastX-delayspeed-c;}
if (window.pageYOffset+floatY>lastY) {lastY=lastY+delayspeed+c;}
if (window.pageYOffset+floatY<lastY) {lastY=lastY-delayspeed-c;}
}
if (NS4){
document.layers[floatlayer].pageX = lastX;
document.layers[floatlayer].pageY = lastY;
}
if (NS6){
document.getElementById(floatlayer).style.left=lastX;
document.getElementById(floatlayer).style.top=lastY;
}
}
else if (IE4){
if (lastX==-1 || delayspeed==0)
{
lastX=document.body.scrollLeft + floatX;
lastY=document.body.scrollTop + floatY;
}
else
{
var dx=Math.abs(document.body.scrollLeft+floatX-lastX);
var dy=Math.abs(document.body.scrollTop+floatY-lastY);
var d=Math.sqrt(dx*dx+dy*dy);
var c=Math.round(d/10);
if (document.body.scrollLeft+floatX>lastX) {lastX=lastX+delayspeed+c;}
if (document.body.scrollLeft+floatX<lastX) {lastX=lastX-delayspeed-c;}
if (document.body.scrollTop+floatY>lastY) {lastY=lastY+delayspeed+c;}
if (document.body.scrollTop+floatY<lastY) {lastY=lastY-delayspeed-c;}
}
document.all[floatlayer].style.posLeft = lastX;
document.all[floatlayer].style.posTop = lastY;
} 
setTimeout('adjust("'+floatlayer+'")',50);
}

function define()
{
if ((NS4) || (NS6)) 
{ 
if (halign=="left") {floatX=ifloatX};
if (halign=="right") {floatX=window.innerWidth-ifloatX-layerwidth-20};
if (halign=="center") {floatX=Math.round((window.innerWidth-20)/2)-Math.round(layerwidth/2)};
if (valign=="top") {floatY=ifloatY};
if (valign=="bottom") {floatY=window.innerHeight-ifloatY-layerheight};
if (valign=="center") {floatY=Math.round((window.innerHeight-20)/2)-Math.round(layerheight/2)};
}
if (IE4) 
{
if (halign=="left") {floatX=ifloatX};
if (halign=="right") {floatX=document.body.offsetWidth-ifloatX-layerwidth-20}
if (halign=="center") {floatX=Math.round((document.body.offsetWidth-20)/2)-Math.round(layerwidth/2)}
if (valign=="top") {floatY=ifloatY};
if (valign=="bottom") {floatY=document.body.offsetHeight-ifloatY-layerheight}
if (valign=="center") {floatY=Math.round((document.body.offsetHeight-20)/2)-Math.round(layerheight/2)}
}
}