帮我看看这段代码什么意思

帮我看看这段代码什么意思 c_a_3(); 帮我看看这段代码什么意思, 本帖最后由 yang131261 于 2013-08-29 16:59:51 编辑 script type= text/javascript /* ==== slider nameSpace ==== */ var slider = function() { /* ==== private methods ==== */ function getElementsByClass(object, tag, className) { var o = object.getElementsByTagName(tag); for ( var i = 0, n = o.length, ret = []; i n; i++) { if (o[i].className == className) ret.push(o[i]); } if (ret.length == 1) ret = ret[0]; return ret; } function setOpacity (obj,o) { if (obj.filters) obj.filters.alpha.opacity = Math.round(o); else obj.style.opacity = o / 100; } /* ==== Slider Constructor ==== */ function Slider(oCont, speed, iW, iH, oP) { this.slides = []; this.over = false; this.S = this.S0 = speed; this.iW = iW; this.iH = iH; this.oP = oP; this.oc = document.getElementById(oCont); this.frm = getElementsByClass(this.oc, 'div', 'slide'); this.NF = this.frm.length; this.resize(); for (var i = 0; i this.NF; i++) { this.slides[i] = new Slide(this, i); } this.oc.parent = this; this.view = this.slides[0]; this.Z = this.mx; /* ==== on mouse out event ==== */ this.oc.onmouseout = function () { this.parent.mouseout(); return false; } } Slider.prototype = { /* ==== animation loop ==== */ run : function () { this.Z += this.over ? (this.mn - this.Z) * .5 : (this.mx - this.Z) * .5; this.view.calc(); var i = this.NF; while (i--) this.slides[i].move(); }, /* ==== resize ==== */ resize : function () { this.wh = this.oc.clientWidth;//750 this.ht = this.oc.clientHeight;