jsp在IE和火狐中不兼容问题
以下是用js写的一段代码，在IE下正常，在火狐和谷歌下不行，请问要如何更改，谢谢！
function id(obj) { return document.getElementById(obj); } var page; var lm, mx; var md = false; var sh = 0; var en = false; window.onload = function () { page = id("div1").getElementsByTagName("div"); //document.getElementsByTagName("div"); if (page.length > 0) { page[0].style.zIndex = 2; } for (i = 0; i < page.length; i++) { page[i].className = "page1"; page[i].innerHTML += "<span class=tip1>第 " + (i + 1) + "/" + page.length + " 页 提示：左右拖拽翻页</span>"; page[i].id = "page1" + i; page[i].i = i; page[i].onmousedown = function (e) { if (!en) { if (!e) { e = e || window.event; } lm = this.offsetLeft; mx = (e.pageX) ? e.pageX : e.x; this.style.cursor = "w-resize"; md = true; if (document.all) { this.setCapture(); } else { window.captureEvents(Event.MOUSEMOVE | Event.MOUSEUP); } } } page[i].onmousemove = function (e) { if (md) { en = true; if (!e) { e = e || window.event; } var ex = (e.pageX) ? e.pageX : e.x; this.style.left = ex - (mx - lm) + 350; if (this.offsetLeft < 75) { var cu = (this.i == 0) ? page.length - 1 : this.i - 1; page[sh].style.zIndex = 0; page[cu].style.zIndex = 1; this.style.zIndex = 2; sh = cu; } if (this.offsetLeft > 75) { var cu = (this.i == page.length - 1) ? 0 : this.i + 1; page[sh].style.zIndex = 0; page[cu].style.zIndex = 1; this.style.zIndex = 2; sh = cu; } } } page[i].onmouseup = function () { this.style.cursor = "default"; md = false; if (document.all) { this.releaseCapture(); } else { window.releaseEvents(Event.MOUSEMOVE | Event.MOUSEUP); } flyout(this); } } } function flyout(obj) { if (obj.offsetLeft < 75) { if ((obj.offsetLeft + 350 - 20) > -275) { obj.style.left = obj.offsetLeft + 350 - 20; window.setTimeout("flyout(id('" + obj.id + "'));", 0); } else { obj.style.left = -275; obj.style.zIndex = 0; flyin(id(obj.id)); } } if (obj.offsetLeft > 75) { if ((obj.offsetLeft + 350 + 20) < 1125) { obj.style.left = obj.offsetLeft + 350 + 20; window.setTimeout("flyout(id('" + obj.id + "'));", 0); } else { obj.style.left = 1125; obj.style.zIndex = 0; flyin(id(obj.id)); } } } function flyin(obj) { if (obj.offsetLeft < 75) { if ((obj.offsetLeft + 350 + 20) < 425) { obj.style.left = obj.offsetLeft + 350 + 20; window.setTimeout("flyin(id('" + obj.id + "'));", 0); } else { obj.style.left = 425; en = false; } } if (obj.offsetLeft > 75) { if ((obj.offsetLeft + 350 - 20) > 425) { obj.style.left = obj.offsetLeft + 350 - 20; window.setTimeout("flyin(id('" + obj.id + "'));", 0); } else { obj.style.left = 425; en = false; } } }