Ajax Blog 用到的几个函数

var x0=0,y0=0,x1=0,y1=0;
var offx=6,offy=6;
var moveable=false;  
var normal='#C6E7FF';  //正常时的背景颜色
var index=10000;      //z-index;

//开始拖动;
function startDrag(obj)
{
    if(event.button==1)
    {
        obj.setCapture(); //锁定标题栏;
        var win = obj.parentNode; //定义对象;
        x0 = event.clientX;    //记录鼠标和层位置;
        y0 = event.clientY;
        x1 = parseInt(win.style.left);
        y1 = parseInt(win.style.top);
        moveable = true;
    }
}

//拖动;
function drag(obj)
{
    if(moveable)
    {
        var win = obj.parentNode;
        win.style.left = x1 + event.clientX - x0;
        win.style.top  = y1 + event.clientY - y0;
    }
}

//停止拖动;
function stopDrag(obj)
{
    if(moveable)
    {
        obj.releaseCapture();
        moveable = false;
    }
}

//获得焦点;
function getFocus(obj)
{
    if(obj.style.zIndex!=index)
    {
        index = index + 2;
        var idx = index;
        obj.style.zIndex=idx;
        obj.nextSibling.style.zIndex=idx-1;
    }
}
//最小化;
function min(obj)
{
    var win=obj.parentNode.parentNode.parentNode;
    var msg=win.childNodes;
    var flg=msg(1).style.display;
    if(flg=="none")
    {
        msg(1).style.display = "block";
        obj.src= "images/opentriangle.gif";
    }else{
        msg(1).style.display = "none";
        obj.src= "images/TRIANGLE.GIF";
    }
}
//创建一个对象;
function xWin(id,w,h,l,t,tit,msg)
{
    index = index+2;
    this.id      = id;
    this.width   = w;
    this.height  = h;
    this.left    = l;
    this.top     = t;
    this.zIndex  = index;
    this.title   = tit;
    this.message = msg;
    this.obj     = null;
    this.bulid   = bulid;
    this.bulid();
}
//初始化;
function bulid()
{
    var str = ""
        + "<div id=xMsg" + this.id + " "
        + "style='"
        + "z-index:" + this.zIndex + ";"
        + "width:" + this.width + ";"
        + "left:" + this.left + ";"
        + "top:" + this.top + ";"
        + "background-color:#fff;"
        + "color:#000;"
        + "font-size:14px;"
        + "position:absolute;"
        + "display:none;"
        + "border:#6BC3FF 1px solid ;'"
        + "onmousedown='getFocus(this)'>"

        + "<div "
        + "style='"
        + "background-color:" + normal + ";"
        + "width:" + (this.width+5) + ";"
        + "line-height:26px;cursor:move;border:1px #ccc solid;"
        + "margin:1px;vertical-align:middle"
        + "' "
        + "onmousedown='startDrag(this)' "
        + "onmouseup='stopDrag(this)' "
        + "onmousemove='drag(this)' "
        + "ondblclick='min(this.childNodes[1])'"
        + ">"
        + "<span style='float:left;width:50%;text-align:left;padding-left:3px;font-weight:bold;'>" + this.title +""+"</span>"
        + "<span style='float:right;width:47%;text-align:right;padding-right:3px;padding-top:5px;'> "
        +"<img src='images/opentriangle.GIF' onclick='min(this)' style='cursor:pointer;'/>&nbsp;"
        +"<img src='images/CloseBtn.gif' onclick='$SHwin(\""+this.id+"\")' style='cursor:pointer;'/></span>"    
        + "</div>"

        + "<div style='"
        + "width:100%;"
        + "height:" + this.height + ";"
        + "background-color:white;"
        + "line-height:14px;"
        + "word-break:break-all;"
        + "padding:3px;"
        + "'>" + this.message + "</div>"

        + "</div>"
    document.body.insertAdjacentHTML("beforeEnd",str);
}

function $SHwin(id){
    if(document.getElementById("xMsg"+id).style.display=='none'){
     document.getElementById("xMsg"+id).style.display='block';
    }
    else{
      document.getElementById("xMsg"+id).style.display='none';
    }
}