DIV 浮动对话框 兼容IE , FF

DIV 浮动对话框 兼容IE , FF

JS:

function Tong_MoveDiv()

{

//参数说明

// id 要移动的层ID

// Evt 是 event, window.event; 要在FF 中可以用 e ? e :window.event;

// T 为 int 有数字是拖动 没有是变大小

this.Move=function(Id,Evt,T)

{

if(Id=="") return;

var o = document.getElementById(Id);

if(!o) return;//如果这个东东不在

evt = Evt ? Evt : window.event;

o.style.position = "absolute";//设定他的样式为绝对定位

o.style.zIndex = 200;//这里显示上下的

var obj = evt.srcElement ? evt.srcElement : evt.target; //得到个原素 使它在FF中也可以用

//得到当前对要移动对象的 坐标

var w = o.offsetWidth;

var h = o.offsetHeight;

var l = o.offsetLeft;

var t = o.offsetTop;

var div = document.createElement("DIV");//新原素DIV

document.body.appendChild(div);

div.style.cssText = "filter:alpha(Opacity=10,style=0);opacity:0.2;width:"+w+"px;height:"+h+"px;top:"+t+"px;left:"+l+"px;position:absolute;background:#BBBBBB";//设定 filter； 注意opacity 是FF中的 Opacity

div.setAttribute("id", Id +"temp");

if(T)//看看是拖动还是 变大小

{

this.Move_OnlyMove(Id,evt);

}

else

{

}

}

//移动函数

//参数 Id 要移动的层ID

//Evt 是 event, window.event; 要在FF 中可以用 e ? e :window.event;

this.Move_OnlyMove = function(Id,Evt)

{

var o = document.getElementById(Id+"temp");

if(!o) return;

evt = Evt?Evt:window.event;//都是FF 才要这么写的

var relLeft = evt.clientX - o.offsetLeft;//得到左边的 宽度

var relTop = evt.clientY - o.offsetTop;//得到上边的 宽度

//抓取 事件

if (!window.captureEvents)

{

o.setCapture(); //指定 抓取 事件

}

else

{

window.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP);

}

//文档的 onmousemove 事件

document.onmousemove = function(e)

{

if (!o) return;

e = e ? e : window.event;

if (e.clientX - relLeft <= 0)

o.style.left = 0 +"px";

else if (e.clientX - relLeft >= document.documentElement.clientWidth - o.offsetWidth - 2)

o.style.left = (document.documentElement.clientWidth - o.offsetWidth - 2) +"px";

else

o.style.left = e.clientX - relLeft +"px";

if (e.clientY - relTop <= 1)

o.style.top = 1 +"px";

else if (e.clientY - relTop >= document.documentElement.clientHeight - o.offsetHeight - 30)

o.style.top = (document.documentElement.clientHeight - o.offsetHeight - 30) +"px";

else

o.style.top = e.clientY - relTop +"px";

}

//文档的 onmouseup 事件

document.onmouseup = function()

{

if (!o) return;

if (!window.captureEvents)

o.releaseCapture();

else

window.releaseEvents(Event.MOUSEMOVE|Event.MOUSEUP);

var o1 = document.getElementById(Id);

if (!o1) return;

var l0 = o.offsetLeft;

var t0 = o.offsetTop;

var l = o1.offsetLeft;

var t = o1.offsetTop;

MyMove.Move_e(Id, l0 , t0, l, t);

document.body.removeChild(o);

o = null;

}

}

this.Move_e = function(Id, l0 , t0, l, t)

{

if (typeof(window["ct"+ Id]) != "undefined") clearTimeout(window["ct"+ Id]);

var o = document.getElementById(Id);

if (!o) return;

var sl = st = 8;

var s_l = Math.abs(l0 - l);

var s_t = Math.abs(t0 - t);

if (s_l - s_t > 0)

if (s_t)

sl = Math.round(s_l / s_t) > 8 ? 8 : Math.round(s_l / s_t) * 6;

else

sl = 0;

else

if (s_l)

st = Math.round(s_t / s_l) > 8 ? 8 : Math.round(s_t / s_l) * 6;

else

st = 0;

if (l0 - l < 0) sl *= -1;

if (t0 - t < 0) st *= -1;

if (Math.abs(l + sl - l0) < 52 && sl) sl = sl > 0 ? 2 : -2;

if (Math.abs(t + st - t0) < 52 && st) st = st > 0 ? 2 : -2;

if (Math.abs(l + sl - l0) < 16 && sl) sl = sl > 0 ? 1 : -1;

if (Math.abs(t + st - t0) < 16 && st) st = st > 0 ? 1 : -1;

if (s_l == 0 && s_t == 0) return;

if (Math.abs(l + sl - l0) < 2)

o.style.left = l0 +"px";

else

o.style.left = l + sl +"px";

if (Math.abs(t + st - t0) < 2)

o.style.top = t0 +"px";

else

o.style.top = t + st +"px";

window["ct"+ Id] = window.setTimeout("MyMove.Move_e('"+ Id +"', "+ l0 +" , "+ t0 +", "+ (l + sl) +", "+ (t + st) +")", 1);

}

}

var MyMove = new Tong_MoveDiv();

后台：

<div id="divmove" style="border:1px dashed #5E5E5E; width:400px; text-align:center;">

<div onmousedown="MyMove.Move('divmove',event,1)" style="cursor:move; height:20px; background-color:#FFF"></div>

<textarea id="TextArea1" rows="10" cols="45"></textarea>

<input id="Submit1" type="submit" value="回复" />

<input id="Reset1" type="reset" value="清空" />

</div>

转自http://www.cnblogs.com/Csharp-net/archive/2007/12/15/996046.html