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[收藏]JS模拟窗口
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<script language="javascript">
function $() 
{
    var arr=new Array();
    for (var i=0; i < arguments.length; i++) 
    {
        var aa=arguments[i];
        if(typeof(aa)=='string')
        {
            aa=document.getElementById(aa);
        }
        if(arguments.length==1)
        {
            return aa;
        }
        arr.push(aa);
    }
    return arr;
}
function Cmsgbox()
{
    this.title=null;
    this.message=null;
    this.left=[];
    this.top=[];
    this.isminibox=[];
    this.width=[];
    this.id=0;
    this.hover='orange';
    this.normal='slategray';
    this.dragenable=false;
    this.x=0;
    this.y=0;
    this.curindex=100;
    this.actindex=null;
    this.modal=true;
    this.bgdivobj=null;
}
Cmsgbox.prototype.subwin=function(msg,fcallback,tit,w,l,t,modal,type)
{
    var buttoncss="width:69px;height:20px;color:#333;cursor:hand;";
    if(type==2)
    {
        if(modal=="undefined"||modal==null)
            modal=false;
        this.isminibox[this.id]=false;
    }
    this.basemsg(tit,msg,w,l,t,modal);
    var str="<div id='"+this.id+"csubwin' onmousedown='Cmgbox.totop(this)' style='z-index:"+(this.curindex++)+";background-color:white;position:absolute;border:2px solid "+this.normal+";left:"+this.left[this.id]+"px;top:"+this.top[this.id]+"px;width:"+this.width[this.id]+"px;' >";
    str+="<div style='padding-bottom:2px;background-color:"+this.normal+";width:100%;height:16px;color:white;' ";
    str+="onmousedown='Cmgbox.begindrag(this)' onmousemove='Cmgbox.ondrag(this)' onmouseup='Cmgbox.enddrag(this)' ";
    if(type==2)
        str+="ondblclick='Cmgbox.minibox(this.childNodes(1))'";
    str+="><div style='float:left;height:16px;overflow:hidden;margin:0px;padding:4px 0px 0px 5px;width:"+(this.width[this.id]-2*14-5)+";'>"+this.title+"</div>";
    if(type==2)
        str+="<span style='width:14px;font-family:webdings;cursor:hand;' onclick='Cmgbox.minibox(this)'>0</span><span style='width:14px;font-family:webdings;cursor:hand;' onclick='Cmgbox.closediv(this)'>r</span>";
    str+="</div><div style='margin:10px 5px 10px 10px;word-break:break-all;'>"+this.message+"</div>";
    if(type==0||type=="undefinded"||type==null||type==""||type==1)
    {
        typestr="<input type='button' style='"+buttoncss+"' id='boxyes' value='确 定' />";
        if(type==1)
            typestr+="&nbsp;&nbsp;&nbsp;<input type='button' style='"+buttoncss+"' value='取 消' onclick='Cmgbox.closediv(this)' />";
        str+="<div style=text-align:right;margin:0px;padding:7px;padding-right:15px;background:#ccc;'>"+typestr+"</div></div>";
    }
    if(this.modal)
        this.showbgdiv(this.curindex-2);
    this.id++;
    document.body.insertAdjacentHTML("beforeEnd",str);
    if(type!=2)
    {
        $("boxyes").focus();
        $("boxyes").onclick=function()
        {
            Cmgbox.closediv(this);
            if(fcallback)
                fcallback();
        }
    }
}
Cmsgbox.prototype.showbgdiv=function(zindex)
{
    var swidth,sheight;
    swidth=document.body.offsetWidth+document.body.offsetLeft*2;
    if(document.body.clientHeight<screen.height)
        sheight=screen.height;
    else
        sheight=document.body.clientHeight+document.body.offsetTop*2;
    var bgobj=document.createElement("div");
    bgobj.setAttribute('id','bgdiv');
    bgobj.style.position="absolute";
    bgobj.style.top="0px";
    bgobj.style.background="#ccc";
    bgobj.style.filter="progid:dximagetransform.microsoft.alpha(style=3,opacity=25,finishopacity=75)";
    bgobj.style.left="0px";
    bgobj.style.width=swidth;
    bgobj.style.height=sheight;
    bgobj.style.zIndex = zindex;
    bgobj.oncontextmenu=function(){return false;}
    bgobj.ondragstart=function(){return false;}
    bgobj.onselectstart=function(){return false;}
    document.body.appendChild(bgobj);
    this.bgdivobj=bgobj;
}
////////////////////////关闭窗口////////////////////////
Cmsgbox.prototype.closediv=function(obj)
{
    if(this.modal)
    {
        document.body.removeChild(this.bgdivobj);
        this.bgdivobj=null;
        this.modal=false;
    }
    obj.parentNode.parentNode.removeNode(true);
}
//////////////////////使窗口出现在最顶端/////////////////////////
Cmsgbox.prototype.totop=function(obj)
{
    this.actindex=this.curindex-1;
    if(obj.style.zIndex<this.actindex)
        obj.style.zIndex=this.curindex++;
}
/////////////////////开始拖动///////////////////////////////////////////
Cmsgbox.prototype.begindrag=function(obj)
{
    if(event.button==1)
    {
        this.dragenable=true;
        obj.setCapture();
        var box=obj.parentNode;
        this.x=event.clientX;
        this.y=event.clientY;
        box.style.borderColor=this.hover;
        obj.style.backgroundColor=this.hover;
        box.style.filter="progid:DXImageTransform.Microsoft.shadow(direction=135,color=#8E8E8E,strength=5)";
    }
}
///////////////////////////拖动中////////////////////////////////////////
Cmsgbox.prototype.ondrag=function(obj)
{
    if(this.dragenable)
    {
        var box=obj.parentNode;
        var i=parseInt(box.id);
        var boxleft=event.clientX-this.x+this.left[i];
        var boxtop=event.clientY-this.y+this.top[i];
        if(boxleft>0&&boxleft+this.width[i]<(document.body.offsetWidth+document.body.offsetLeft*2))
            box.style.pixelLeft=boxleft;
        if(boxtop>0)
            box.style.pixelTop=boxtop;
    }
}
//////////////////////////结束拖动/////////////////////////////////
Cmsgbox.prototype.enddrag=function(obj)
{
    if(this.dragenable)
    {
        var box=obj.parentNode;
        var i=parseInt(box.id);
        this.dragenable=false;
        box.style.borderColor=this.normal;
        obj.style.backgroundColor=this.normal;
        this.left[i]=box.style.pixelLeft;
        this.top[i]=box.style.pixelTop;
        box.style.filter="";
        obj.releaseCapture();
    }
}
/////////////////////////窗口最小化///////////////////////////////
Cmsgbox.prototype.minibox=function(obj)
{
    var title=obj.parentNode;
    var i=parseInt(title.parentNode.id);
    if(this.isminibox[i]=!this.isminibox[i])
    {
        title.nextSibling.style.display="none";
        obj.innerHTML="2";
    }
    else
    {
        title.nextSibling.style.display="";
        obj.innerHTML="0";
    }
}
Cmsgbox.prototype.basemsg=function(tit,msg,w,l,t,modal)
{
    this.title=tit||"系统消息";
    this.message=msg;
    if(modal=="undefined"||modal==null)
        modal=true;
    if(w=="undefined"||w==null||w=="")
        w=300;
    if(l=="undefined"||l==null||l=="")
        l=parseInt((document.body.clientWidth-w)/2);
    if(t=="undefined"||t==null||t=="")
        t=100+document.body.scrollTop;
    this.left[this.id]=l;
    this.top[this.id]=t;
    this.width[this.id]=w;
    this.modal=modal;
}
/////////////////////实例化/////////////////////////////////////
var Cmgbox=new Cmsgbox();
window.subwin=function(msg,tit,w,l,t,modal){Cmgbox.subwin(msg,function(){},tit,w,l,t,modal,2);}    //跳出子窗口 例:window.subwin(标题,内容,宽,X坐标,Y坐标,是否模态显示); （默认为非模态）
window.msgbox=function(msg,fcallback,tit,type,modal){return Cmgbox.subwin(msg,fcallback,tit,"","","",modal,type);}//跳出模态选框 例:window.msgbox(标题,内容,类型选择,是否模态显示);(type=0:alert; type=1:confirm)
</script>
<title>无标题文档</title>
<style>