Adding Snow Effect in Website

Just pate this code to your site :
System1:  

<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 path to the snow image
  var snowsrc="http://www.dynamicdrive.com/dynamicindex3/snow.gif"
  // 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.indexOf("dynamicdrive.com")!=-1)? "http://www.dynamicdrive.com/dynamicindex3/snow.gif" : 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>



System2: <marquee behavior="scroll" direction="down" scrollamount="3" style="position:absolute; left:120; top:50; width:25; height:450; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="4" style="position:absolute; left:170; top:70; width:25; height:300; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="5" style="position:absolute;left:220; top:90; width:25; height:250; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="6" style="position:absolute; left:270; top:30; width:25; height:370; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="7" style="position:absolute; left:320; top:30; width:25; height:340; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="2" style="position:absolute; left:240; top:30; width:25; height:70; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="3" style="position:absolute; left:250; top:30; width:25; height:50; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="2" style="position:absolute; left:290; top:30; width:25; height:60; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="3" style="position:absolute; left:100;top:130; width:25;height:80; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="2" style="position:absolute; left:360; top:30; width:25; height:330; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="3" style="position:absolute; left:390; top:50;width:25; height:400; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="4" style="position:absolute; left:440; top:70; width:25; height:300; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="2" style="position:absolute; left:470;top:100; width:25; height:300; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="4" style="position:absolute; left:560; top:70; width:25; height:300; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="2" style="position:absolute; left:590; top:100; width:25; height:300; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="4" style="position:absolute; left:520; top:170; width:25; height:300; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="2" style="position:absolute; left:610; top:200; width:25; height:300; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="3" style="position:absolute; left:650; top:250; width:25; height:340; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee> <marquee behavior="scroll" direction="down" scrollamount="2" style="position:absolute; left:690; top:290; width:25; height:380;..;"><IMG SRC="c"></marquee> <marquee behavior="scroll" direction="down" scrollamount="3" style="position:absolute; left:660; top:40; width:25; height:70; ..;"><IMG SRC="http://myspacetools.eu/images/snow.gif"></marquee>