把代码中所需要的图片换成云的图片效果更佳
<!-- http://js.knowsky.com/ --> <!-- http://bbs.knowsky.com/--> 将下面代码复制到你网页中<body>中即可...... <script language="JavaScript1.2"> var no = 18; var speed = 2; var snow = new Array(); snow[0] = "images/yun.gif" snow[1] = "images/yun.gif" snow[2] = "images/yun.gif" var ns4up = (document.layers) ? 1 : 0; var ie4up = (document.all) ? 1 : 0; var ns6up = (document.getElementById&&!document.all) ? 1 : 0; var dx, xp, yp; var am, stx, sty; 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; 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=""+ 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() { for (i = 0; i < no; ++ i) { 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]; document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]); } setTimeout("snowNS()", speed); } function snowIE_NS6() { for (i = 0; i < no; ++ i) { 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.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()", speed); } if (ns4up) { snowNS(); } else if (ie4up||ns6up) { snowIE_NS6(); } </script> 电脑术语解释大全，网页特效：跟随鼠标的图片的网页代码
