试试代码高亮显示
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"><html><head><title>particle-6</title><meta http-equiv="imagetoolbar" content="no"><style type="text/css">html {overflow: hidden;}body {margin: 0px;padding: 0px;background: #fff;position: absolute;width: 100%;height: 100%;cursor: crosshair;}#C img {position: absolute;}</style><script type="text/javascript">var object = new Array();var xm = 0;var xmm = 0;var ym = 0;var ymm = 0;/* === pos camera ===*/var Xo = 0;var Yo = 0;var Zo = -256;/* === screen origin === */var Xc = 0;var Yc = 0;/* === setup === */var nbp = 120;/* ====================== */var ya = 0;var YA = 2;/* === particles animation === */function anim(){for(var i=0;i<nbp;i++){o = object[i];with(o){vo++;if(vo > 256)vo = 1;x = vo*cra;y=Yc-Math.sin(vo/70)*Yc*1.5-20;z = vo*sra;}}}/* ========= 3D ================ */function M3D(o, Xa, Ya, Za, E, L){ /* === trigo === */cosZa = Math.cos(Za);sinZa = Math.sin(Za);cosYa = Math.cos(Ya);sinYa = Math.sin(Ya);cosXa = Math.cos(Xa);sinXa = Math.sin(Xa);/* === 3 x 3 Rotation matrix === */R3D00 = cosZa * cosYa;R3D10 = sinZa * cosYa;R3D20 = -sinYa;R3D01 = cosZa * sinYa * sinXa - sinZa * cosXa;R3D11 = sinZa * sinYa * sinXa + cosXa * cosZa;R3D21 = sinXa * cosYa;R3D02 = cosZa * sinYa * cosXa + sinZa * sinXa;R3D12 = sinZa * sinYa * cosXa - cosZa * sinXa;R3D22 = cosXa * cosYa;for(var i in o){/* ===== rotation ===== */x3D = (R3D00 * o[i].x + R3D10 * o[i].y + R3D20 * o[i].z) * E;y3D = (R3D01 * o[i].x + R3D11 * o[i].y + R3D21 * o[i].z) * E;z3D = (R3D02 * o[i].x + R3D12 * o[i].y + R3D22 * o[i].z) * E;/* === 2D projection === */X = Xc + Xo + Zo * (x3D-Xo) / (Zo-z3D);Y = Yc + Yo + Zo * (y3D-Yo) / (Zo-z3D);/* ===== HTML anim ===== */with(o[i]){ PIC.left = Math.round(X)+'px';PIC.top = Math.round(Y)+'px';PIC.zIndex = Math.round(1000-z3D);if(Math.floor(vo/4)==vo/4)PIC.width = PIC.height = Math.round((-Zo-z3D*.5)/L)+'px';}}}function Cobj(x,y,z,src){o = document.createElement("img");o.src = src;document.getElementById("C").appendChild(o);this.PIC = o.style;this.x = x;this.y = y;this.z = z;ra = Math.random()*2*Math.PI;this.sra = Math.sin(ra);this.cra = Math.cos(ra);this.vo = Math.round(Math.random()*127)+1;}/* === main loop === */function main(){ya += (xm - xmm) * .0002;YA += (ya *= .995);anim();M3D(object,0,YA,0, 1, 6);Yo = (-ym*2+Yc)*.5;xmm = xm;ymm = ym; setTimeout("main()", 16);}onload = function(){resize();xm = Xc;ym = Yc / 2;/* === particles === */for(i=0;i<nbp;i++){if(i<nbp/4)s=document.getElementById("G").src; else s=document.getElementById("F").src;object[i] = new Cobj(0,0,0, s);}main();}/* ===================== */function resize() {Xc = document.body.offsetWidth * .5;Yc = document.body.offsetHeight * .5;}onresize = resize;/* === mouse events === */document.onmousemove = function(e){if (window.event) e = window.event;xm = (e.x || e.clientX);ym = (e.y || e.clientY);}/* ===================== */</script></head><body><div id="C"></div><div style="display:none"><img id="F" src="blomst.gif"><img id="G" src="blad.gif"></div></body></html>?本文章是别人的一个网页特效，本人只是测试下代码显示。