Anti-Sina Blog JS pop-up test window

/*
Author: Daviv
Blog: Http://blog.163.com/jxdawei
Time: 2006-10-27
Thank you: Wenming (Blueidea)

Features: pop-up Prompts
Method: Call Salert ("information you want to eject");

*/

function Salert (str) {
var Msgw,msgh,bordercolor;
msgw=400;//the width of the prompt window
msgh=100;//the height of the prompt window
TITLEHEIGHT=25//Hint window header height
Bordercolor= "#336699";//Hint window border color
Titlecolor= "#99CCFF";//Hint window title color

var swidth,sheight;
Swidth=document.body.offsetwidth;
Sheight=document.body.offsetheight;
if (sheight<screen.height)
{
Sheight=screen.height;
}

var bgobj=document.createelement ("div");
Bgobj.setattribute (' id ', ' bgdiv ');
bgobj.style.position= "Absolute";
bgobj.style.top= "0";
Bgobj.style.background= "#777";
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 = "10000";
Document.body.appendChild (Bgobj);

var msgobj=document.createelement ("div")
Msgobj.setattribute ("id", "msgdiv");
Msgobj.setattribute ("Align", "center");
msgobj.style.background= "White";
Msgobj.style.border= "1px solid" + bordercolor;
MsgObj.style.position = "absolute";
MsgObj.style.left = "50%";
MsgObj.style.top = "50%";
Msgobj.style.font= "12px/1.6em Verdana, Geneva, Arial, Helvetica, Sans-serif";
MsgObj.style.marginLeft = " -225px";
MsgObj.style.marginTop = -75+document.documentelement.scrolltop+ "px";
MsgObj.style.width = MSGW + "px";
MsgObj.style.height =msgh + "px";
msgObj.style.textAlign = "center";
MsgObj.style.lineHeight = (msgh-titleheight) + "px";
MsgObj.style.zIndex = "10001";

var title=document.createelement ("H4");
Title.setattribute ("id", "msgtitle");
Title.setattribute ("Align", "right");
title.style.margin= "0";
Title.style.padding= "3px";
Title.style.background=bordercolor;
Title.style.filter= "Progid:DXImageTransform.Microsoft.Alpha (startx=20, starty=20, finishx=100, finishy=100,style= 1,OPACITY=75,FINISHOPACITY=100); ";
Title.style.opacity= "0.75";
Title.style.border= "1px solid" + bordercolor;
Title.style.height= "18px";
Title.style.font= "12px Verdana, Geneva, Arial, Helvetica, Sans-serif";
title.style.color= "White";
title.style.cursor= "Pointer";
Title.innerhtml= "Close";
Title.onclick=function () {
Document.body.removeChild (Bgobj);
document.getElementById ("Msgdiv"). RemoveChild (title);
Document.body.removeChild (Msgobj);
}
Document.body.appendChild (Msgobj);
document.getElementById ("Msgdiv"). AppendChild (title);
var txt=document.createelement ("P");
Txt.style.margin= "1em 0"
Txt.setattribute ("id", "msgtxt");
TXT.INNERHTML=STR;
document.getElementById ("Msgdiv"). appendchild (TXT);
}