vb.org Archive - Random Image Falling On Page Refresh?

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:

Code:

/******************************************

* 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:

Code:

<!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>

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