var x0=0,y0=0,x1=0,y1=0;
var offx=6,offy=6;
var moveable=false;
var hover='orange',normal='#336699';//color;
var index=10000;//z-index;


var sWidth,sHeight; 
sWidth=screen.width; 
sHeight=screen.height; 
var bgObj=document.createElement("div"); 
//背景锁定
function blockbg()
{
        bgObj.setAttribute('id','bgDiv'); 
        bgObj.style.position="absolute"; 
        bgObj.style.top="0"; 
        bgObj.style.background="#f7f7f7"; 
        bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75"; 
        bgObj.style.opacity="0.6"; 
        bgObj.style.left="0"; 
        bgObj.style.width=sWidth + "px"; 
        bgObj.style.height=sHeight + "px"; 
        bgObj.style.zIndex = index-2; 
        document.body.appendChild(bgObj);
}
//解除背景锁定
function unblockbg()
{
document.body.removeChild(bgObj); 	
}
//开始拖动; 
function startDrag(obj) 
{ 
if(event.button==1) 
{ 
//锁定标题栏; 
obj.setCapture(); 
//定义对象; 
var win = obj.parentNode; 
var sha = win.nextSibling; 
//记录鼠标和层位置; 
x0 = event.clientX; 
y0 = event.clientY; 
x1 = parseInt(win.style.left); 
y1 = parseInt(win.style.top); 
//记录颜色; 
normal = obj.style.backgroundColor; 
//改变风格; 
obj.style.backgroundColor = hover; 
win.style.borderColor = hover; 
obj.nextSibling.style.color = hover; 
sha.style.left = x1 + offx; 
sha.style.top = y1 + offy; 
moveable = true; 
} 
} 
//拖动; 
function drag(obj) 
{ 
if(moveable) 
{ 
var win = obj.parentNode; 
var sha = win.nextSibling; 
win.style.left = x1 + event.clientX - x0; 
win.style.top = y1 + event.clientY - y0; 
sha.style.left = parseInt(win.style.left) + offx; 
sha.style.top = parseInt(win.style.top) + offy; 
} 
} 
//停止拖动; 
function stopDrag(obj) 
{ 
if(moveable) 
{ 
var win = obj.parentNode; 
var sha = win.nextSibling; 
var msg = obj.nextSibling; 
win.style.borderColor = normal; 
obj.style.backgroundColor = normal; 
msg.style.color = normal; 
sha.style.left = obj.parentNode.style.left; 
sha.style.top = obj.parentNode.style.top; 
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; 
var sha = win.nextSibling; 
var tit = obj.parentNode; 
var msg = tit.nextSibling; 
var flg = msg.style.display=="none"; 
if(flg) 
{ 
win.style.height = parseInt(msg.style.height) + parseInt(tit.style.height) + 2*2; 
sha.style.height = win.style.height; 
msg.style.display = "block"; 
obj.innerHTML = "0"; 
} 
else 
{ 
win.style.height = parseInt(tit.style.height) + 2*2; 
sha.style.height = win.style.height; 
obj.innerHTML = "2"; 
msg.style.display = "none"; 
} 
} 

//关闭; 
function cls(obj) 
{ 
var win = obj.parentNode.parentNode; 
var sha = win.nextSibling; 
win.style.visibility = "hidden"; 
sha.style.visibility = "hidden"; 
unblockbg();
} 
//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 + ";" 
+ "height:" + this.height + ";" 
+ "left:" + this.left + ";" 
+ "top:" + this.top + ";" 
+ "background-color:" + normal + ";" 
+ "color:" + normal + ";" 
+ "font-size:12px;" 
+ "font-family:宋体;" 
+ "position:absolute;" 
+ "cursor:default;" 
+ "border:2px solid " + normal + ";" 
+ "' " 
+ "onmousedown='getFocus(this)'>" 
+ "<div " 
+ "style='" 
+ "background-color:" + normal + ";" 
+ "width:" + (this.width-2*2) + ";" 
+ "height:20;" 
+ "color:white;" 
+ "' " 
+ "onmousedown='startDrag(this)' " 
+ "onmouseup='stopDrag(this)' " 
+ "onmousemove='drag(this)' " 
+ "ondblclick='min(this.childNodes[1])'" 
+ ">" 
+ "<span style='width:" + (this.width-2*12-4) + ";padding-left:3px;'>" + this.title + "</span>" 
+ "<span style='width:12;border-width:0px;color:white;font-family:webdings;' onclick='min(this)'>0</span>" 
+ "<span style='width:12;border-width:0px;color:white;font-family:webdings;' onclick='cls(this)'>r</span>" 
+ "</div>" 
+ "<div style='" 
+ "width:100%;" 
+ "height:" + (this.height-20-4) + ";" 
+ "background-color:white;" 
+ "line-height:14px;" 
+ "word-break:break-all;" 
+ "padding:3px;" 
+ "'>" + this.message + "</div>" 
+"<div height='30' align='center' style='background-color:#ffffff;padding:5px;' >"
+"<span style='border-width:0px;color:red;' onclick='cls(this)'>【关闭】</span>&nbsp;</div>"
+ "</div>"
+ "<div style='" 
+ "width:" + this.width + ";" 
+ "height:" + this.height + ";" 
+ "top:" + this.top + ";" 
+ "left:" + this.left + ";" 
+ "z-index:" + (this.zIndex-1) + ";" 
+ "position:absolute;" 
+ "background-color:black;" 
+ "filter:alpha(opacity=40);" 
+ "'>By Burnda</div>"; 
document.body.insertAdjacentHTML("beforeEnd",str); 
blockbg();
}