Random Image Falling On Page Refresh?

[yotsume]

I tried some variations of a random image array but could not get that to work. Like this page:

http://www.webdevelopersnotes.com/tu...avascript.php3

--------------- Added [DATE]1292237292[/DATE] at [TIME]1292237292[/TIME] ---------------

Well now I have two snowmen and only the snowflakes fall. UGGG

--------------- Added [DATE]1292238417[/DATE] at [TIME]1292238417[/TIME] ---------------

Well any ideas next???

[Michael.A]

am going to have to get back to that....

[yotsume]

I got this to work now perfectly! Here is the code to allow a list of multiple images to fall on a site on every page reload or refresh:

/******************************************
* Snow Effect Script- By Altan d.o.o. (http://www.altan.hr/snow/index.html)
* Visit Dynamic Drive DHTML code library (http://www.dynamicdrive.com/) for full source code
* Last updated Nov 9th, 05' by DD. This notice must stay intact for use
******************************************/

  //Configure below to change URL paths to your falling images
  var imgs=[
   '/images/misc/reindeer.gif',
   '/images/misc/snowman.gif',
   '/images/misc/snowflake.gif'
  ]

  var snowsrc=imgs[Math.floor(Math.random()*imgs.length)];
  // Configure below to change number of snow to render
  var no = 10;
  // Configure whether snow should disappear after x seconds (0=never):
  var hidesnowtime = 0;
  // Configure how much snow should drop down before fading ("windowheight" or "pageheight")
  var snowdistance = "pageheight";

///////////Stop Config//////////////////////////////////

  var ie4up = (document.all) ? 1 : 0;
  var ns6up = (document.getElementById&&!document.all) ? 1 : 0;

    function iecompattest(){
    return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
    }

  var dx, xp, yp;    // coordinate and position variables
  var am, stx, sty;  // amplitude and step variables
  var i, doc_width = 800, doc_height = 600;

  if (ns6up) {
    doc_width = self.innerWidth;
    doc_height = self.innerHeight;
  } else if (ie4up) {
    doc_width = iecompattest().clientWidth;
    doc_height = iecompattest().clientHeight;
  }

  dx = new Array();
  xp = new Array();
  yp = new Array();
  am = new Array();
  stx = new Array();
  sty = new Array();
  snowsrc=snowsrc
  for (i = 0; i < no; ++ i) {
    dx[i] = 0;                        // set coordinate variables
    xp[i] = Math.random()*(doc_width-50);  // set position variables
    yp[i] = Math.random()*doc_height;
    am[i] = Math.random()*20;         // set amplitude variables
    stx[i] = 0.02 + Math.random()/10; // set step variables
    sty[i] = 0.7 + Math.random();     // set step variables
        if (ie4up||ns6up) {
      if (i == 0) {
        document.write("<div id=\"dot"+ i +"\" style=\"POSITION:  absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT:  15px;\"><a href=\"http://dynamicdrive.com\"><img  src='"+snowsrc+"' border=\"0\"><\/a><\/div>");
      } else {
        document.write("<div id=\"dot"+ i +"\" style=\"POSITION:  absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT:  15px;\"><img src='"+snowsrc+"' border=\"0\"><\/div>");
      }
    }
  }

  function snowIE_NS6() {  // IE and NS6 main animation function
    doc_width = ns6up?window.innerWidth-10 : iecompattest().clientWidth-10;
        doc_height=(window.innerHeight &&  snowdistance=="windowheight")? window.innerHeight : (ie4up &&  snowdistance=="windowheight")?  iecompattest().clientHeight : (ie4up  && !window.opera && snowdistance=="pageheight")?  iecompattest().scrollHeight : iecompattest().offsetHeight;
    for (i = 0; i < no; ++ i) {  // iterate for every dot
      yp[i] += sty[i];
      if (yp[i] > doc_height-50) {
        xp[i] = Math.random()*(doc_width-am[i]-30);
        yp[i] = 0;
        stx[i] = 0.02 + Math.random()/10;
        sty[i] = 0.7 + Math.random();
      }
      dx[i] += stx[i];
      document.getElementById("dot"+i).style.top=yp[i]+"px";
      document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i])+"px";
    }
    snowtimer=setTimeout("snowIE_NS6()", 10);
  }

    function hidesnow(){
        if (window.snowtimer) clearTimeout(snowtimer)
        for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="hidden"
    }


if (ie4up||ns6up){
    snowIE_NS6();
        if (hidesnowtime>0)
        setTimeout("hidesnow()", hidesnowtime*1000)
        }

To have this on a stand alone HTML file use this code instead:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>
  <title>Random Falling Images</title>
</head>

<body>
<div style="height:400px;" ></div>
<script type="text/javascript">

/******************************************
* Snow Effect Script- By Altan d.o.o. (http://www.altan.hr/snow/index.html)
* Visit Dynamic Drive DHTML code library (http://www.dynamicdrive.com/) for full source code
* Last updated Nov 9th, 05' by DD. This notice must stay intact for use
******************************************/

  //Configure below to change URL paths to your images
  var imgs=[
   '/images/misc/reindeer.gif',
   '/images/misc/snowman.gif',
   '/images/misc/snowflake.gif'
  ]

  var snowsrc=imgs[Math.floor(Math.random()*imgs.length)];
  // Configure below to change number of snow to render
  var no = 10;
  // Configure whether snow should disappear after x seconds (0=never):
  var hidesnowtime = 0;
  // Configure how much snow should drop down before fading ("windowheight" or "pageheight")
  var snowdistance = "pageheight";

///////////Stop Config//////////////////////////////////

  var ie4up = (document.all) ? 1 : 0;
  var ns6up = (document.getElementById&&!document.all) ? 1 : 0;

    function iecompattest(){
    return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
    }

  var dx, xp, yp;    // coordinate and position variables
  var am, stx, sty;  // amplitude and step variables
  var i, doc_width = 800, doc_height = 600;

  if (ns6up) {
    doc_width = self.innerWidth;
    doc_height = self.innerHeight;
  } else if (ie4up) {
    doc_width = iecompattest().clientWidth;
    doc_height = iecompattest().clientHeight;
  }

  dx = new Array();
  xp = new Array();
  yp = new Array();
  am = new Array();
  stx = new Array();
  sty = new Array();
  snowsrc=snowsrc
  for (i = 0; i < no; ++ i) {
    dx[i] = 0;                        // set coordinate variables
    xp[i] = Math.random()*(doc_width-50);  // set position variables
    yp[i] = Math.random()*doc_height;
    am[i] = Math.random()*20;         // set amplitude variables
    stx[i] = 0.02 + Math.random()/10; // set step variables
    sty[i] = 0.7 + Math.random();     // set step variables
        if (ie4up||ns6up) {
      if (i == 0) {
        document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><a href=\"http://dynamicdrive.com\"><img src='"+snowsrc+"' border=\"0\"><\/a><\/div>");
      } else {
        document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"><\/div>");
      }
    }
  }

  function snowIE_NS6() {  // IE and NS6 main animation function
    doc_width = ns6up?window.innerWidth-10 : iecompattest().clientWidth-10;
        doc_height=(window.innerHeight && snowdistance=="windowheight")? window.innerHeight : (ie4up && snowdistance=="windowheight")?  iecompattest().clientHeight : (ie4up && !window.opera && snowdistance=="pageheight")? iecompattest().scrollHeight : iecompattest().offsetHeight;
    for (i = 0; i < no; ++ i) {  // iterate for every dot
      yp[i] += sty[i];
      if (yp[i] > doc_height-50) {
        xp[i] = Math.random()*(doc_width-am[i]-30);
        yp[i] = 0;
        stx[i] = 0.02 + Math.random()/10;
        sty[i] = 0.7 + Math.random();
      }
      dx[i] += stx[i];
      document.getElementById("dot"+i).style.top=yp[i]+"px";
      document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i])+"px";
    }
    snowtimer=setTimeout("snowIE_NS6()", 10);
  }

    function hidesnow(){
        if (window.snowtimer) clearTimeout(snowtimer)
        for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="hidden"
    }


if (ie4up||ns6up){
    snowIE_NS6();
        if (hidesnowtime>0)
        setTimeout("hidesnow()", hidesnowtime*1000)
        }

</script></body>

</html>

[Michael.A]

post this in mods there well be a nice use for it when i have time i think i can make it in to a add-on for vb that u can add images from the admincp.. is it cool with you?

[yotsume]

Originally Posted by MAD--DOG

post this in mods there well be a nice use for it when i have time i think i can make it in to a add-on for vb that u can add images from the admincp.. is it cool with you?

Adding admin support for uploading new images would be great. I plan to combine my version of this with a similar mod that is released that allows you have keep the falling objects at the bottom of the screen as they fall. So they collect there and build up and then eventually fade. Example is like when snow falls and accumulates. The code used is the exact same js file just altered.

Anyway let me know when you think you can help with the project. I am going to release this under the vb.3.8x section