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//*********  鎖屏DIV ***************************
function LockScreen(tag,title,width,height,url)
{
    if (tag) //鎖屏
    {
        var lockdiv = document.getElementById("lockscreen");
        if (lockdiv!=null)
        {
            lockdiv.style.display = "block";
            var subdiv = document.getElementById("subdialog");
            if (subdiv!=null)
            {
                subdiv.style.display = "block";
                document.getElementById("dialog1").src = url;
            }           
        }else{
            //創建新的鎖屏DIV,并執行鎖屏
            var tabframe= document.createElement("div");
            tabframe.id = "lockscreen";
            tabframe.name = "lockscreen";
            tabframe.style.top = '0px';
            tabframe.style.left = '0px';
            tabframe.style.height = '100%';
            tabframe.style.width = '100%';
            tabframe.style.position = "absolute";
            tabframe.style.filter = "Alpha(opacity=10)";
            tabframe.style.backgroundColor="#000000";
            tabframe.style.zIndex = "99998";
            document.body.appendChild(tabframe);
            tabframe.style.display = "block";
            //子DIV
            var subdiv = document.createElement("div");
            subdiv.id = "subdialog";
            subdiv.name = "subdialog";
            subdiv.style.top = Math.round((tabframe.clientHeight-height)/2);
            subdiv.style.left = Math.round((tabframe.clientWidth-width)/2);
            subdiv.style.height = height+'px';
            subdiv.style.width = width+'px';
            subdiv.style.position = "absolute";
            subdiv.style.backgroundColor="red";
            subdiv.style.zIndex = "99999";
            subdiv.style.filter = "Alpha(opacity=100)";
            subdiv.style.border = "1px";
            subdiv.onmousemove = mouseMoveDialog;
            subdiv.onmousedown = control_onmousedown;
            subdiv.onmouseup = mouseUp;
            document.body.appendChild(subdiv);
            subdiv.style.display = "block";
            //subdiv.onclick=UNLockScreen;
            var iframe_height = height-30;
            var titlewidth = width-14;
            var html = " "
            html += " ";
            html += " ";
            html += " ";
            html += "

	";             html += " "+title+" ";             html += "

";
            subdiv.innerHTML = html;
        }
    }else{
        //解屏
        var lockdiv = document.getElementById("lockscreen");
        if (lockdiv!=null)
        {
            lockdiv.style.display = "none";
        }
        var subdiv = document.getElementById("subdialog");
        if (subdiv!=null)
        {
            subdiv.style.display = "none";
        }
    }
}
function UNLockScreen()
{
   LockScreen(false);
}

//調用方法

LockScreen(true,"標題",424,314,"http://www.baidu.com");