<script language="JavaScript1.2"> <!-- Begin var no = 15; // image number or falling rate - numero bollicine - var speed = 2; // the lower the number the faster the image moves - velocità - var snow = new Array(); snow[0] = "Sfondi_Javascript/bubble1.gif" snow[1] = "Sfondi_Javascript/bubble2.gif" snow[2] = "Sfondi_Javascript/bubble3.gif" 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 = 800, doc_height = 1800; 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(); j = 0; 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\"><img src=\""+ snow[j] + "\" border=\"0\"></layer>"); } else { document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src=\""+ snow[j] + "\" 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; width:1;\"><img src=\"" + snow[j] + "\" border=\"0\"></div>"); } else { document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"VISIBILITY: visible; TOP: 15px; LEFT: 15px; width:1;\"><img src=\"" + snow[j] + "\" border=\"0\"></div>"); } } if (j == (snow.length-1)) { j = 0; } else { j += 1; } } function snowNS() {// Netscape main animation function for (i = 0; i < no; ++ i) {// iterate for every dot yp[i] -= sty[i];if (yp[i] < -50) { xp[i] = Math.random()*(doc_width-am[i]-30); yp[i] = doc_height; 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]+pageYOffset; document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]); } setTimeout("snowNS()", speed); } function snowIE_NS6() {// IE main animation function for (i = 0; i < no; ++ i) {// iterate for every dot yp[i] -= sty[i]; if (yp[i] < -50) { xp[i] = Math.random()*(doc_width-am[i]-30); yp[i] = doc_height; stx[i] = 0.02 + Math.random()/10; sty[i] = 0.7 + Math.random(); doc_width = ns6up?window.innerWidth-5:document.body.clientWidth; doc_height = ns6up?window.innerHeight-5:document.body.clientHeight; } dx[i] += stx[i]; if (ie4up){ document.all["dot"+i].style.pixelTop = yp[i]+document.body.scrollTop; 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]+pageYOffset; document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i]); } } setTimeout("snowIE_NS6()", speed); } if (ns4up) { snowNS(); } else if (ie4up||ns6up) { snowIE_NS6(); } // End --> </script>