/*

Snow Effect Script

Submitted by Altan d.o.o. (snow@altan.hr, http://www.altan.hr/snow/index.html)

Permission granted to Dynamicdrive.com to feature script in archive

For full source code to this script, visit http://dynamicdrive.com

*/

  



  //Configure below to change URL path to the snow image

  var snowsrc="images/smflake.gif"

  // Configure below to change number of snow to render

  var no = 5;



  var ns4up = (document.layers) ? 1 : 0;  // browser sniffer

  var ie4up = (document.all) ? 1 : 0;

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



  var dx, xp, yp;    // coordinate and position variables

  var am, stx, sty;  // amplitude and step variables

  var i, doc_width = 780, doc_height = 200;

  

  if (ns4up||ns6up) {

    doc_width = self.innerWidth;

    doc_height = self.innerHeight;

  } else if (ie4up) {

    doc_width = document.body.clientWidth;

    doc_height = document.body.clientHeight;

  }



  dx = new Array();

  xp = new Array();

  yp = new Array();

  am = new Array();

  stx = new Array();

  sty = new Array();

  

  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 (ns4up) {                      // set layers

      if (i == 0) {

        document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><a href=\"http://www.fagowees.org/\"><img src='"+snowsrc+"' border=\"0\"></a></layer>");

      } else {

        document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src='"+snowsrc+"' border=\"0\"></layer>");

      }

    } else 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://www.fagowees.org/\"><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 snowNS() {  // Netscape main animation function

    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();

        doc_width = self.innerWidth;

        doc_height = self.innerHeight;

      }

      dx[i] += stx[i];

      document.layers["dot"+i].top = yp[i];

      document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]);

    }

    setTimeout("snowNS()", 10);

  }



  function snowIE_NS6() {  // IE and NS6 main animation function

    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();

        doc_width = ns6up?window.innerWidth : document.body.clientWidth;

        doc_height = ns6up?window.innerHeight : document.body.clientHeight;

      }

      dx[i] += stx[i];

      if (ie4up){

      document.all["dot"+i].style.pixelTop = yp[i];

      document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]);

      }

      else if (ns6up){

      document.getElementById("dot"+i).style.top=yp[i];

      document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i]);

      }   

    }

    setTimeout("snowIE_NS6()", 10);

  }



  if (ns4up) {

    snowNS();

  } else if (ie4up||ns6up) {

    snowIE_NS6();

  }