Javascript page effect help

[RedFox2002]

Hi, im making a webpage and i wanted to include this bubble javascript page effect on it.

here is the original code im using: http://www.mf2fm.com/rv/dhtmlbubbles.php

and this is the code i have for my webpage so far: https://pastebin.com/LR7vb3nj

i have an issue with centering the bubbles at the bottom of my page; the bubbles spawn on the leftside of my page instead. What code do i need to change to fix this? Also, i am a beginner when it comes to javascript, so please be patient with me. Thanks in advance!

[anon321]

I have updated the code so that the bubbles are centered from the bottom.

<script type="text/javascript">
// <![CDATA[
var colours=new Array("#a6f", "#60f", "#60f", "#a6f", "#ccc");
var bubbles=66;
var over_or_under="over";

/****************************
*   JavaScript Bubble Bath  *
*(c)2010-13 mf2fm web-design*
*  http://www.mf2fm.com/rv  *
* DON'T EDIT ABOVE THIS BOX *
****************************/

var swide=800;
var shigh=600;
var bubb=new Array();
var bubbx=new Array();
var bubby=new Array();
var bubbs=new Array();
var boddie;
var ie_version=(navigator.appVersion.indexOf("MSIE")!=-1)?parseFloat(navigator.appVersion.split("MSIE")[1]):false;

function addLoadEvent(funky) {
  var oldonload=window.onload;
  if (typeof(oldonload)!='function') window.onload=funky;
  else window.onload=function() {
    if (oldonload) oldonload();
    funky();
  }
}

addLoadEvent(bubba);

function bubba() { if (document.getElementById) {
  var i, rats, div;
  boddie=document.createElement("div");
  boddie.style.position="fixed";
  boddie.style.top="0px";
  boddie.style.left="0px";
  boddie.style.overflow="visible";
  boddie.style.width="1px";
  boddie.style.height="1px";
  boddie.style.backgroundColor="transparent";
  boddie.style.zIndex="0";
  document.body.appendChild(boddie);
  set_width();
  for (i=0; i<bubbles; i++) {
    rats=createDiv("3px", "3px");

    div=createDiv("auto", "auto");
    rats.appendChild(div);
    div=div.style;
    div.top="1px";
    div.left="0px";
    div.bottom="1px";
    div.right="0px";
    div.borderLeft="1px solid "+colours[3];
    div.borderRight="1px solid "+colours[1];

    div=createDiv("auto", "auto");
    rats.appendChild(div);
    div=div.style;
    div.top="0px";
    div.left="1px";
    div.right="1px";
    div.bottom="0px"
    div.borderTop="1px solid "+colours[0];
    div.borderBottom="1px solid "+colours[2];

    div=createDiv("auto", "auto");
    rats.appendChild(div);
    div=div.style;
    div.left="1px";
    div.right="1px";
    div.bottom="1px";
    div.top="1px";
    div.backgroundColor=colours[4];
    if (ie_version && ie_version<10) div.filter="alpha(opacity=50)";
    else div.opacity=0.5;

    boddie.appendChild(rats);
    bubb[i]=rats.style;
    bubb[i].zIndex=(over_or_under=="over")?"1001":"0";
  }
  bubble();
}}

function bubble() {
  var c;
  for (c=0; c<bubbles; c++) if (!bubby[c] && Math.random()<0.333) {
    bubb[c].left=(bubbx[c]=Math.floor(swide/4+Math.random()*swide/2)-10)+"px"; // UPDATED LINE HERE
    bubb[c].top=(bubby[c]=shigh)+"px";
    bubb[c].width="3px";
    bubb[c].height="3px"
    bubb[c].visibility="visible";
    bubbs[c]=3;
    break;
  }
  for (c=0; c<bubbles; c++) if (bubby[c]) update_bubb(c);
  setTimeout("bubble()", 40);
}

function update_bubb(i) {
  if (bubby[i]) {
    bubby[i]-=bubbs[i]/2+i%2;
    bubbx[i]+=(i%5-2)/5;
    if (bubby[i]>0 && bubbx[i]>0 && bubbx[i]<swide) {
      if (Math.random()<bubbs[i]/shigh*2 && bubbs[i]++<8) {
        bubb[i].width=bubbs[i]+"px";
        bubb[i].height=bubbs[i]+"px";
      }
      bubb[i].top=bubby[i]+"px";
      bubb[i].left=bubbx[i]+"px";
    }
    else {
      bubb[i].visibility="hidden";
      bubby[i]=0;
      return;
    }
  }
}

window.onresize=set_width;
function set_width() {
  var sw_min=999999;
  var sh_min=999999;
  if (document.documentElement && document.documentElement.clientWidth) {
    if (document.documentElement.clientWidth>0) sw_min=document.documentElement.clientWidth;
    if (document.documentElement.clientHeight>0) sh_min=document.documentElement.clientHeight;
  }
  if (typeof(self.innerWidth)=='number' && self.innerWidth) {
    if (self.innerWidth>0 && self.innerWidth<sw_min) sw_min=self.innerWidth;
    if (self.innerHeight>0 && self.innerHeight<sh_min) sh_min=self.innerHeight;
  }
  if (document.body.clientWidth) {
    if (document.body.clientWidth>0 && document.body.clientWidth<sw_min) sw_min=document.body.clientWidth;
    if (document.body.clientHeight>0 && document.body.clientHeight<sh_min) sh_min=document.body.clientHeight;
  }
  if (sw_min==999999 || sh_min==999999) {
    sw_min=800;
    sh_min=600;
  }
  swide=sw_min;
  shigh=sh_min;
}

function createDiv(height, width) {
  var div=document.createElement("div");
  div.style.position="absolute";
  div.style.height=height;
  div.style.width=width;
  div.style.overflow="hidden";
  div.style.backgroundColor="transparent";
  return (div);
}
// ]]>
</script>

Tested and works fine. Hope that is what you want.
Good luck

[RedFox2002]

yes this is what i wanted, thank you so much!

[anon321]

Am glad to have helped.