var snowsrc="http://www.halogen-control.de/bilder/snow.gif"
           var no = 20;
           var ns4up = (document.layers) ? 1 : 0;  
           var ie4up = (document.all) ? 1 : 0;
           var dx, xp, yp;   
           var am, stx, sty; 
           var i, doc_width = 300, doc_height = 100;
           if (ns4up) {
             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;                        
             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();    
             if (ns4up) {                      
               if (i == 0) {
                 document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src='"+snowsrc+"' border=\"0\"></layer>");
               } else {
                 document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src='"+snowsrc+"' border=\"0\"></layer>");
               }
             } else if (ie4up) { 
               if (i == 0) {
                 document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"></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() {  
             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 = 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() {  // IE 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 = document.body.clientWidth;
                 doc_height = document.body.clientHeight;
               }
               dx[i] += stx[i];
               document.all["dot"+i].style.pixelTop = yp[i];
               document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]);
             }
             setTimeout("snowIE()", 25);
           }
         
           if (ns4up) {
             snowNS();
           } else if (ie4up) {
             snowIE();
           }