var no = 2;
var speed = 15;
var snowflake = "dress/winter/snowflake.gif";

var dx, xp, yp;    // coordinate and position variables
var am, stx, sty;  // amplitude and step variables
var i;
var doc_width = document.body.clientWidth;
var 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;
 xp[i] = Math.random() * (doc_width - 50);
 yp[i] = Math.random() * doc_height;
 am[i] = Math.random() * 20;
 stx[i] = 0.02 + Math.random() / 10;
 sty[i] = 0.7 + Math.random();
 document.write("<div id=\"dot" + i + "\" style=\"position: absolute; z-index: " + i + "; visibility: visible; top: 15px; left: 15px;\"><img src=\"" + snowflake + "\" border=\"0\"></div>");
}

function snow()
{
 for ( i = 0; i < no; ++i )
 {
  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 = document.body.clientWidth;
   doc_height = document.body.clientHeight;
  }
  dx[i] += stx[i];
  document.getElementById("dot"+i).style.top = yp[i];
  document.getElementById("dot"+i).style.left = xp[i] + am[i] * Math.sin(dx[i]);
 }
 setTimeout("snow()", speed);
}

snow();